WorksheetsImpulse and momentum
Total questions: 10
Worksheet time: 6mins
The momentum of an object with mass m moving with velocity v is determined by the formula:
p =m .v
p = m.v
p =vm
p = vm
Momentum vector is a vector
in the same direction, opposite to the velocity vector
with a direction that forms any angle α with the velocity vector
perpendicular to the velocity vector
in the same direction, same as the velocity vector
The SI unit of momentum is:
A. kg.m/s
B. kg.m.s
C. kg.m2 /s
D. kg.m/s2
A 2 kg object moves in a straight line with a velocity of 5 m/s. The magnitude of the momentum of the object is
9 kg.m/s.
10 kg.m/s.
6 kg.m/s.
7 kg.m/s.
The unit of impulse of force is:
A. N.s
B. kg.m.s
C. kg.m2 /s
D. kg.m/s2
The expression of Newton's second law can be written in the form
F.Δt=Δp
F.Δp=Δt
F.Δp=ma
F.Δt=ma
A particle, initially at rest, is experienced a constant net force with a magnitude of 0.1 N. The magnitude of the impulse of the particle at time t = 3 s from the start of the motion is
30 N.s.
3 N.s.
0.3 N.s.
0.03 N.s.
A ball with a mass of 1 kg hits the wall perpendicularly at a speed of 5 m/s and bounces back at a speed of 3 m/s. The momentum of the object has changed by an amount of
2 kg.m/s.
5 kg.m/s.
3 kg.m/s.
8 kg.m/s.
A 1000 kg truck is moving at a speed of 10 m/s, South. A 500 kg car is moving in the opposite direction at a speed of 15 m/s. The total momentum of the two vehicles is
10000 kg.m/s, South
2500 kg.m/s, South
7500 kg.m/s, North
17500 kg.m/s, North
The momentum vector of an object remains constant in the case of
All 3 cases
The object moves in a circle
The object moves in a straight line at constant speed
The object is in free fall
