Recent questions tagged acceleration

From the top of a building 40 m tall, a ball a thrown vertically upwards with a velocity of $10\; ms^{-1}$ After how long will the ball hit the ground?

asked Aug 19, 2014 by meena.p

2 answers

A body moving in a straight line covers a distance of $14 m $ in the 5th second and 20 m in the 8th second. How much distance will it cover in the 15th second ?

asked Aug 19, 2014 by meena.p

1 answer

A marble rolls across a flat surface. Its initial speed is 41 m/s but it comes to rest after 10 seconds . Find the acceleration of the marble and the distance traveled by the marble as it comes to rest.

asked Aug 19, 2014 by meena.p

1 answer

A car acceleration from rest at a constant rate $\alpha$ for some time after which it decelerates at a constant rate $\beta$ to come to rest. If t is the total time elapsed , then the maximum velocity attained by the car is

asked Aug 19, 2014 by meena.p

1 answer

An electron starting from rest has a velocity that increases linearly with time i.e $v= kt$ where $k=2\;m\;s^{-2}$. The distance covered in the first 3 second is

asked Aug 19, 2014 by meena.p

1 answer

A steel ball is bouncing up and down on a steel plate with a period of oscillation of 1 second. If $g= 10\;ms^{-2}$, then if bounces up to a height of

asked Aug 19, 2014 by meena.p

1 answer

A body travelling with uniform acceleration crosses two points A and B with velocities $20\;ms^{-1}$ and $30 \;ms^{-1}$ respectively . The speed of the body at the mid-point of A and B is

asked Aug 19, 2014 by meena.p

1 answer

A bus starts from rest with an acceleration of $ 1\;ms^{-2}$ A man who is $48\;m$ behind the bus starts with a uniform velocity of $ 10\;ms^{-1}$. The minimum time after which the man will catch the bus is

asked Aug 19, 2014 by meena.p

1 answer

A stone is allowed to fall from the top of tower 100 metre high and at the same time another stone is projected vertically upwards from the ground with a velocity of $25\;ms^{-1} $. The two stones will meets after

asked Aug 19, 2014 by meena.p

1 answer

The displacement x of a particle at the instant when its velocity is v is given by $ v = \sqrt {3x+16}$ . Its acceleration and initial velocity are

asked Aug 19, 2014 by meena.p

1 answer

The distance through which a body falls in the nth seconds is h. The distance through which it falls in the next seconds is

asked Aug 19, 2014 by meena.p

1 answer

A stone is thrown upwards with velocity v. At half the height, its velocity is

asked Aug 14, 2014 by meena.p

1 answer

A ball is thrown vertically upwards from the top of a tower of height h with velocity v. The ball strikes the ground after

asked Aug 14, 2014 by meena.p

1 answer

A small block slides without friction down an inclined plane starting from rest. Let $S_n$ be the distance travelled from time $t- n-1$ to $t=n$. Then $\large\frac{S_n}{S_{n_1}}$ is

asked Aug 14, 2014 by meena.p

1 answer

A car travelling on a straight road at $15.0$ meter per second accelerates uniformly to a speed of $21.0$ meters per second in $12.0 \;second$. The total distance traveled by the car in this $12.0 $ second time interval is

asked Aug 14, 2014 by meena.p

1 answer

An astronaut standing on a platform on the Moon drops a hammer. If the hammer falls $6.0 $ meters vertically in $2.7 \;seconds$, what is its acceleration ?

asked Aug 14, 2014 by meena.p

1 answer

A dart is thrown at a target that is supported by a wooden backstop. It strikes the backstop with an initial velocity of $350\;m/s$ The dart comes to rest in $0.0050\;s$ What is the acceleration of the dart ?

asked Aug 14, 2014 by meena.p

1 answer

A sailboat acceleration uniformly from $6.0\;m/s$ to $ 8.0 [N]$ at a rate of $0.50\;m/s^2$. What distance does the boat travel ?

asked Aug 13, 2014 by meena.p

1 answer

A sports car approaches a highway on-ramp at a velocity of $20.0\;m/s $ . If the car accelerates at a rate of $3.2 \;m/s^2 $ for $5.0\;s$ , What is the displacement of the car ?

asked Aug 13, 2014 by meena.p

1 answer

A car is moving at a speed $50 \;km /h$ two seconds there it is moving at $60 \;km/h$ Calculate the acceleration of the car.

asked Aug 13, 2014 by meena.p

1 answer

A car starts from rest , moves with an acceleration $a$ and then decelerates at $b$ for some time to come to rest. If the total time taken is t, the maximum velocity is

asked Aug 13, 2014 by meena.p

1 answer

A car staring from rest acceleration at the rate $f$ through a distance $S$, then continues at constant speed for time $t$ and then decelerates at rate $\large\frac{f}{2}$ to come to rest. If the total distance covered is $15\;s$ , then

asked Aug 13, 2014 by meena.p

1 answer

The relation between time t and distance $x$ is $t= ax^2+bx$ where a and b are constants . The acceleration is

asked Aug 13, 2014 by meena.p

1 answer

The position of a particle as a function of time is given by equation: $x =2t^3-6t^2+12t+6$. The acceleration of the body is zero at

asked Aug 12, 2014 by meena.p

1 answer

A body travels 2 m in the first two seconds and $2.2 \;m$ in the next four seconds. What will be its velocity at the end of the seventh second from the start, if acceleration is constant .

asked Jul 18, 2014 by meena.p

1 answer

A Car is able to stop with a uniform retardation of $8 ms^{-2} $ and the driver of the car can react to an emergency in 0.6 s. Calculate overall stopping distance of the car if the speed of car is $72 \;km\;h^{-1}$

asked Jul 18, 2014 by meena.p

1 answer

Straight from rest and moving with a constant acceleration , a body covers certains distance L in time t. What is the time taken by the body to cover the second half portion of this journey ?

asked Jul 18, 2014 by meena.p

1 answer

Telegraphic poles along a straight railway track are spaced at regular intervals of $90\;m$. A passenger in the train observes the successive pole pass at time intervals of 3 and 2 seconds respectively , find the acceleration of the train assuming it to be uniform .

asked Jul 18, 2014 by meena.p

1 answer

A particle starts from the position of rest under a constant acceleration. If travels a distance x in the first 10 seconds and distance y in the next 20 seconds . Then

asked Jul 10, 2014 by meena.p

1 answer

The greatest acceleration or deceleration that a train may have is $\alpha$ .The minimum time in which the train can get from one station to the next at a distance S is

asked Jul 10, 2014 by meena.p

1 answer

A particle moves a distance x in time t according to equation $x=(t+5)^{-1}$ acceleration of particle is proportional to

asked Jul 3, 2013 by meena.p

1 answer

The acceleration of a particle moving in a straight line varies with its displacement as $a=2s$ velocity of particle is zero at zero displacement. The corresponding velocity displacement equation is

asked Jul 2, 2013 by meena.p

1 answer

A train starts from station A with uniform acceleration $\alpha$ for some distance and then goes with uniform retardation $\beta$ for some more time to come to rest at station B.The distance between station A and B is 4 km. and the train takes 4 minutes to complete this journey. If $\alpha$ and $\beta$ are in $km/min^2$ then

asked Jun 28, 2013 by meena.p

1 answer

The displacement of a body is given to be proportional to the cube of time elapsed. The magnitude of acceleration of the body is

asked Jun 28, 2013 by meena.p

1 answer

The velocity of a particle is given by $v=5-t^2 m/s.$ The average acceleration of the particle between 3 and 5 seconds will be

asked Jun 27, 2013 by meena.p

1 answer

The velocity time (v-t) graph of a moving object is given by the following figure. The maximum acceleration is

asked Jun 25, 2013 by meena.p

1 answer

A particle is moving in x-y plane with $y=\large\frac{x}{2}$ and $v_x=4-2t$. The displacement versus time of the particle would be

asked Jun 25, 2013 by meena.p

1 answer

For a motion with constant acceleration which is/are correct?

asked Jun 25, 2013 by meena.p

1 answer

The velocity-time graph of a moving body is shown in figure. The ratio of acceleration during interval OB and BC is

asked Jun 24, 2013 by meena.p

1 answer

The position x of a particle varies with time as $x=at^2-bt^3$. The acceleration of the particle will be zero at time t equal to

asked Jun 21, 2013 by meena.p

1 answer

A body is moving due north at 10 m/s. In 1 second the velocity changes to 10 m/s due east. Find the average acceleration of the body.

asked Jun 20, 2013 by meena.p

1 answer

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