Match the following and with their unit of measurment a) Displacement 1. ms-1 b) Speed 2. newton c) Acceleration 3. metre d) Force 4. Ns e) Momentum 5. ms-2
a-1, b-2, c-3, d-4, e-5
a-3, b-1, c-5, d-2,e-4
a-2,b-3,c-4,d-5, e-1
a-3, b-2, c-1, d-5, e-4
A body of mass 300 g kept at rest breaks into two parts due to internal forces. One part of mass 200 g is found to move at a velocity of 12m/s towards east. The velocity of the other part is :
14m/s towards east
24m/s towards north
54m/s towards south
24m/s towards west
A bullet of 10 g strikes a sandbag at a speed of 103 m/s and gets embedded after travelling 5 cm. Calculate the resistive force exerted by the sand on the bullet ?
105 N
108 N
107 N
106 N
Newton's second law of motion gives us a measure ofÂ
Force
Inertia
Momentum
Acceleration
Force is the rate of change of :
Mass
Velocity
S.I unit of momentum is :
kg m/s2
kg m/s
kgm-1s-1
kgs
What is the momentum of a man of mass 100 kg when he walks with a uniform velocity of 2 m/s?
200 kg m/s
200 N
200 kgm/s2
50 kg m/s
The tendency of undisturbed objects to stay at rest or keep moving with the same velocity is known as :
Friction
Viscosity
Collision
A hockey ball of mass 200g travelling at 10m/s is struck by a hockey stick so as to return it along its original path with a velocity of 5m/s. Calculate the change of momentum occurred in the motion of the hockey ball by the force applied by the hockey stick ?
3 Ns
-3 Ns
4 Ns
-4 Ns
A mass of 2 kg at rest travels for 4 seconds with an acceleration of 1.5m/s2. The gain of momentum of the body is :
5 kg m/s
10 kg m/s
12 kg m/s
14 kg m/s
