Momentum and Impulse

Momentum is given by the formula p = mv. Choose the correct answer below :

• p = power , m = mass , v = velocity

• p = momentum , m = motion , v = volume

• p = power , m = mass , v = volume

• p = momentum , m = mass , v = velocity

The SI unit for linear momentum is :

• kg m s^-2

• kg m s^-1

• kg m s

• kg m^-1 s

There is NO MOMENTUM, when the velocity of an object is :

• V = 0 ms^-1

• V = constant

Impulse is defined as the product of force and time during which the forces act, J = F.t.

Impulse is produced by a FORCE called :

• Applied force

• Normal force

• Gravitational force

• Impulsive force

Impulse can be determined by calculating the area under graph of

• force (f) - time (t) graph

• impulse (J) - time (t) graph

• momentum (p) - time( t) graph

• velocity (v) - time (t) graph

After collision, the two objects move off with different velocity. What type of collision is this?

• Inelastic

• Elastic

Tags

NGSS.HS-PS2-2

Which option is correct for inelastic collision?

• Total momentum is CONSERVED, kinetic energy is CONSERVED

• Total momentum is NOT CONSERVED, kinetic energy is CONSERVED

• Total momentum is NOT CONSERVED, kinetic energy is NOT CONSERVED

• Total momentum is CONSERVED, kinetic energy is NOT CONSERVED

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

This equation represents :

• ELASTIC collision

• Perfectly INELASTIC collision

For __________ collision, the total kinetic energy IS NOT CONSERVED. Some energy is lost and converted to other form of energy.

• Elastic

• Inelastic

Coefficient of restitution : Is the ratio of the difference in velocities before and after the collision.

Which option is correct?



• A perfectly elastic collision, e_k = 1

• A perfectly elastic collision, e_k = 0

• A perfectly inelastic collision, e_k = 1