The Equations of Motion
Trending Questions
Q. A coin is thrown in a vertically upward direction with a velocity of 5 ms−1. If the acceleration of the coin during its motion is 10 ms−2 in the downward direction, what will be the height attained by the coin and how much time will it take to reach there ?
- s=1.5 m, t=0.25 s
- s=0.25 m, t=1.5 s
- s=1.25 m, t=0.75 s
- s=1.25 m, t=0.5 s
Q.
A ball of mass 20 g is initially moving with a velocity of 100 ms. On applying a constant force on the ball for 0.5s, it acquires a velocity of 150 ms. Calculate the following:
(i) Initial momentum of the ball
(ii) Final momentum of the ball
(iii) Rate of change of momentum
(iv) Acceleration of the ball
(v) Magnitude of the force applied
Q. A plane has a take-off speed of 120 ms−1 after covering a distance of 2400 m. Determine the acceleration (a) of the plane (assuming it to be constant) and the time (t) required to reach that speed.
- a=3ms−2, t=30 s
- a=4ms−2, t=40 s
- a=3ms−2, t=40 s
- a=4ms−2, t=30 s
Q.
A rifle of mass 5 kg fires a bullet of mass 40 g. The bullet leaves the barrel of the rifle with a velocity 200 m/s. If the bullet takes 0.004 s to leave the barrel, calculate the following: (i) recoil velocity of the rifle and (ii) the force experienced by the rifle due to its recoil.
Q.
A bus starting from rest moves with a uniform acceleration of 0.1 ms-2 for 2 minutes. Find the distance traveled.
Q. The initial velocity of a freely falling body is ..........
- more
- less
- zero
- 9.8m/s