A ball is thrown upward with a certain speed. It passes through the same point at 3 second and 7 second from the start. The maximum height achieved by the ball is:
1. 500 m
2. 250 m
3. 125 m
4. 450 m
Difficulty Level:
For the following acceleration versus time graph the corresponding velocity versus displacement graph is
1.
2.
3.
4.
Difficulty Level:
The displacement x of a particle moving in one dimension under the action of the constant force is related to time t by the equation , where x is in meters and t is in seconds. What is the displacement of the particle from t = 0 s to t = 6 s?
1. 0
2. 12 m
3. 6 m
4. 18 m
Difficulty Level:
The acceleration a (in ) of a body, starting from rest varies with time t(in s) following the equation a = 3t+4. The velocity of the body at time t = 2s will be :
1. 10
2. 18
3. 14
4. 26
Difficulty Level:
A body thrown vertically so as to reach its maximum height in t second. The total time from the time of projection to reach a point at half of its maximum height while returning (in second) is:
1.
2.
3.
4.
Difficulty Level:
A stone falls freely from rest from a height h and it travels a distance in the last second. The value of h is:
1. 145 m
2. 100 m
3. 125 m
4. 200 ms
Difficulty Level:
A point moves in a straight line under the retardation a. If the initial velocity is u, the distance covered in 't' seconds is-
1.
2.
3.
4.
Difficulty Level:
A particle is thrown upwards from ground. It experiences a constant resistance force which can produce retardation of 2 . The ratio of time of ascent to the time of descent is:
(1) 1:1
(2)
(3)
(4)
Difficulty Level:
A bullet loses of its velocity passing through a plank. The least number of planks required to stop the bullet is (All planks offers same retardation)
(1) 10
(2) 11
(3) 12
(4) 23
Difficulty Level:
A body starts from the origin and moves along the X-axis such that the velocity at any instant is given by , where t is in sec and velocity in m/s. What is the acceleration of the particle, when it is 2 m from the origin ?
1. 28 m/s2
2. 22 m/s2
3. 12 m/s2
4. 10 m/s2
Difficulty Level: