Impulse
Momentum Change
Hit and Stick Collisions
Rebounding collisions/ explosions
100
The combination of force and time
Impulse
100
Caused by an impulse
Change in momentum
100
What Experiences less force? Hit and stick collisions or rebounding collisions?
Hit and stick collisions
100
What features are in built into cars that allows less force to be applied to the driver inside?
Crumpling
200
True or false? In a collision, the impulse encountered by an object is equal but opposite to its momentum change.
True
200
True or false? In a collision, the momentum change is equal but opposite to the momentum.
False
200
Case a
200
Case B
300
A student leans on a wall and applies a force of 400 N to the wall for 6 seconds. What is the impulse of this interaction?
2400 N•s
300
And impulse is applied to a 34kg object at rest. In response the object moves at a speed of 56 m/s. What is the momentum change?
1904 kg•m/s
300
In a Physics lab, a cart with a mass of 2 kg is moving with a speed of 60 cm/s. It collides with a stationary cart with a mass of 1 kg. After the collision, the two carts stick together and move with a speed of ____ cm/s.
40 cm/s
300
Two carts are at rest upon a track and connected by a compressed spring. The spring is released, pushing upon the two carts such that it propels them in opposite directions. One cart has a mass of 2 kg and is propelled with a speed of 40 cm/s. The second cart has a mass of 1 kg and is propelled with a speed of ____ cm/s.
80 cm/s
400
A 3.0-kg object moving at 10 m/s encounters a 50-Newton resistive force over a duration of 0.20 seconds. The Impulse (magnitude only) experienced by this object is approximately ____ kg•m/s.
10 N•s
400
A 4.0-kg object moving at 70 m/s encounters a 20-Newton resistive force over a duration of 0.40 seconds. The Impulse (magnitude only) experienced by this object is approximately ____ kg•m/s.
8 kg•m/s.
400
A big fish with a mass of 3 kg is at rest. A little fish with a mass of 1 kg is moving towards it at 40.0 cm/s. The big fish opens its mouth and catches the little fish. After lunch, the two fish move together with a speed of ___ cm/s.
10 cm/s
400
Two carts are at rest upon a track and connected by a compressed spring. The spring is released, pushing upon the two carts such that it propels them in opposite directions. One cart has a mass of 8 kg and is propelled with a speed of 40 cm/s. The second cart has a mass of 2 kg and is propelled with a speed of ____ cm/s.
160 cm/s
500
A 3.0-kg object moving at 10 m/s encounters a 456-Newton resistive force over a duration of 3.2 seconds. The Impulse (magnitude only) experienced by this object is approximately ____ kg•m/s.
1459.2 N•s
500
A 7.0-kg object moving at 180 m/s encounters a 6.5-Newton resistive force over a duration of 5.4 seconds. The Impulse (magnitude only) experienced by this object is approximately ____ kg•m/s.
35.1 kg•m/s
500
A roller skater with a mass of 2 kg is moving along the ice with a speed of 6.0 m/s. She collides head-on with a stationary skater who has a mass of 1 kg. After the collision, the two skaters grab onto each other (without spinning or losing their balance) and move with a speed of ____ m/s. Enter your answer accurate to the second decimal place.
4 m/s
500
Two carts are at rest upon a track and connected by a compressed spring. The spring is released, pushing upon the two carts such that it propels them in opposite directions. One cart has a mass of 2 kg and is propelled with a speed of 40 cm/s. The second cart has a mass of 8 kg and is propelled with a speed of ____ cm/s.
10 cm/s