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Recent questions tagged scalars-and-vectors

You start from a point and your first move is 5 m at an angle of 53.1$^{\circ}$. Your second move was 6 m along the x-axis and some unknown distance along the y-axis. Your third move was some unknown distance along the x-axis and -3 m along the y-axis. If you ended up at a point 5.39 m from where you started and 21.8$^{\circ}$ below the x-axis, calculate the unknown components of your second ($y_2$) and third ($x_3$) moves .

asked Aug 11, 2014 by balaji.thirumalai

1 answer

A jet plane takes off with a velocity of 300 km/s at a bearing of 60$^{\circ}$. A wind with a velocity of 80 km/s NW blows it off course. What is the resultant velocity of the jet plane (magnitude and the bearing)?

asked Aug 11, 2014 by balaji.thirumalai

1 answer

A man travels 1 km east , then 5 km due south , then 2 km due east and finally 9 km due north. How far is he from the starting point ?

asked Jul 16, 2014 by meena.p

1 answer

A car travels east at a speed of $30m/s^{-1}$ . It turns left through an angle of $90^{\circ}$ and continues to travel with the same speed. What is the change in its velocity ?

asked Jul 15, 2014 by meena.p

1 answer

An aircraf flies a $400 km/hr$ in still air. A wind of $200 \sqrt 2 km/hr$ is blowing from south. A pilot wishes to travel from A to a point B north east of A .Find the direction he must steer and time of journey if $AB=1000km$

asked Jul 4, 2013 by meena.p

1 answer

A river is flowing with speed of 1km/hr.A swimmer wants to go to point C starting from point A. He swims with a speed of 5 km/hr at an angle $\theta$with respect to the river. If $AB=BC=400m$ Then

asked Jun 28, 2013 by meena.p

1 answer

A man crosses the river in shortest time at an angle $\theta=60 ^{\circ}$ to the direction of flow of water. If the speed of water is $v_w=4\; km/hr$ find the speed of man.

asked Jun 20, 2013 by meena.p

1 answer

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