Question 1 :
The same retarding force is applied to stop a train. If the speed is doubled, then the distance will be

Question 2 :
Consider a jet traveling at 1000 km/hr. If the jet shoots a laser in the same direction it is traveling, how fast will the laser be traveling relative to the ground?<br>

Question 3 :
A body thrown up with a finite speed is caught back after 4 sec. The speed of the body with which it is thrown up is

Question 4 :
A&#160;body&#160;projected&#160;vertically&#160;up&#160;with&#160;a&#160;velocity&#160;of&#160;10&#160;m $s^{-1}$&#160;reaches&#160;a&#160;height&#160;of&#160;20&#160;m.&#160;If&#160;it&#160;is&#160;projected with a velocity of 20 m $s^{-1}$&#160;then the maximum height reached by the body will be :

Question 5 :
The acceleration of a body projected upwards with a certain velocity is

Question 6 :
A ball is thrown vertically upwards. The positive direction is taken to be in upward direction.&#160;Which of the following is the correct sign of the quantities during its ascent?<br/><table class="wysiwyg-table"><tbody><tr><td></td><td>POSITION</td><td>VELOCITY</td><td>ACCELERATION</td></tr><tr><td>(A)</td><td>Positive</td><td>Positive</td><td>Positive</td></tr><tr><td>(B)</td><td>Positive</td><td>Positive</td><td>Negative</td></tr><tr><td>(C)</td><td>Positive</td><td>Negative</td><td>Negative</td></tr><tr><td>(D)</td><td>Negative</td><td>Positive</td><td>Negative</td></tr><tr><td>(E)</td><td>Negative</td><td>Negative</td><td>Negative</td></tr></tbody></table>

Question 7 :
A ball is dropped from a certain height, and at that exact same moment a rock is fired horizontally from the exact same height above ground level.<br>Assuming that air resistance is negligible, which object will strike the ground first?

Question 8 :
A motorcycle is moving with a velocity 80km/hr ahead of a car moving with a velocity of 65 km/hr in the same direction. What is the relative velocity of the motorcycle with respect to the car :-

Question 9 :
A particle experiences constant acceleration for $20 s$ after starting from rest. If it travels a distance ${X}_{1}$, in the first $10 s$ and distance ${X}_{2}$, in the remaining $10 s$, then which of the following is true ?

Question 10 :
A passenger in a moving train tosses a coin. If the coin falls behind him, the train must be moving with

Question 11 :
A stone thrown upward with a speed 'u' from the top of the tower reaches the ground with a velocity '3u'. The height of the tower is :-

Question 12 :
A ball is thrown upward with a velocity of 100m/s it will reach the ground after :-

Question 13 :
A ball is thrown vertically up. If the ball reached at maximum height in $3s$. Assume air resistance is negligible.&#160;The magnitude of the acceleration of the ball at the instant it reaches its maximum height is most nearly:

Question 14 :
<p>A helicopter is flying south with a speed of $50\ kmh^{-1}$. A train is moving with the same speed towards east. The relative velocity of the helicopter as seen by the passengers in the train will be $50 \sqrt {2}\ kmh^{-1}$ towards</p>

Question 15 :
A rock falls off top of a building and drops to the ground in 3 m 20 sec. what is the height of the building?

Question 16 :
A stone falls from a balloon that is descending at a uniform rate of $12ms^{-1}$. The displacement of the stone from the point of release after 10sec is :-

Question 17 :
A body falls from a height $h=200\ m$.The ratio of distance travelled in each $2 sec$ during $t=0$ to $t=6\ sec$ of the journey is

Question 18 :
If a ball is thrown vertically upwards with 40 m/s its velocity after two second will be:-

Question 19 :
<p>A sign convention is used, the positive direction for position, velocity and acceleration is upward. A ball of mass m is thrown upward with velocity $V$ and caught during returning. Identify the signs of position, velocity and acceleration during ascending part of the trajectory.<br/></p><table class="wysiwyg-table"><tbody><tr><td></td><td>Position</td><td>Velocity</td><td>Acceleration</td></tr><tr><td>(A)</td><td>Positive</td><td>Positive</td><td>Positive</td></tr><tr><td>(B)</td><td>Positive</td><td>Positive</td><td>Negative</td></tr><tr><td>(C)</td><td>Positive</td><td>Negative</td><td>Negative</td></tr><tr><td>(D)</td><td>Negative</td><td>Positive</td><td>Negative</td></tr><tr><td>(E)</td><td>Negative</td><td>Negative</td><td>Negative</td></tr></tbody></table>

Question 20 :
When two bodies move uniformly towards each other, the distance decreases by $6ms^{-1}$.If both bodies move in the same direction with the same speed as above the distance between them increases by $4ms^{-1}$. Then the speed of the two bodies are