5480 Conservation of Momentum

Front

What is the principle of conservation of momentum?

Back

The principle states that the total momentum of a closed system remains constant if no external forces act on it.

Front

How does doubling the speed of an object affect its momentum?

Back

Doubling the speed of an object doubles its momentum, as momentum is directly proportional to velocity.

Front

What happens to the total momentum in a closed system during an explosion?

Back

The total momentum is conserved, meaning it remains the same before and after the explosion.

Front

If a cannonball is fired from a cannon, what can be said about the momentum of the cannon and cannonball?

Back

The total momentum of the cannon and cannonball system is conserved.

Front

What is the formula for calculating momentum?

Back

Momentum (p) is calculated using the formula p = mass (m) × velocity (v).

Front

In a collision, if one object is much more massive than the other, how does this affect their velocities post-collision?

Back

The more massive object will have a smaller change in velocity compared to the less massive object.

Front

What is the relationship between force, change in momentum, and time?

Back

Force is equal to the change in momentum divided by the time over which the change occurs (F = Δp/Δt).

Front

How do you calculate the change in momentum of an object?

Back

Change in momentum (Δp) is calculated as the final momentum minus the initial momentum (Δp = p_final - p_initial).

Front

What is the significance of the recoil of a cannon when it fires a cannonball?

Back

The recoil speed of the cannon is much less than the exit velocity of the cannonball due to the cannon's greater mass.

Front

If a 0.057 kg tennis ball traveling at 45 m/s reverses direction and travels at 33 m/s, how do you calculate the force exerted on it?

Back

Use the formula F = Δp/Δt, where Δp is the change in momentum and Δt is the time of contact.