1. In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum.

True <----
False

2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s.

4.00 kg m/s
20.0 kg m/s
25.0 kg m/s
100 kg m/s <----

3. Which of the following describes the relationship between friction and inertia?

When there is more friction, there is less inertia

When there is less friction, there is more inertia

When there is more friction, there is more inertia <----

When there is no friction, there is more inertia

4. Jellyfish sometimes squeeze in the sides of their bodies. This pushes a stream of water from the back end of their bodies. According to Newton's third law of motion, how will this behavior affect the movement of the jellyfish?

The jellyfish will move forward
The inertia of the jellyfish will increase <----
the Jellyfish will move backward
The jellyfish will stay still.

5. Which of the following would have less momentum than a 52 kg cheetah at 10 m/s

a 71 kg lion running at 10 m/s
a 45 kg zebra running at 13 m/s <---
a 5,000 kg elephant walking at 1 m/s
a 61 kg zebra running at 8.0 m/s

6. According to Newton's third law of motion, if a rolling ball collides with a wall and exerts a force of 3N on that wall, how much force does the wall excerpt back on the ball?

0 N
3 N <---
6 N
9 N

7. After an avalanche, a huge block of stone slid down a mountain and landed in the middle of a road. People in the nearby town had a very difficult time moving it out of the road. The block of stone is difficult to move because

it has a high amount of momentum
has balanced forces acting on it
it has a high amount o inertia
has unbalanced forces acting on it <---

8. Which of the following statements is true about a collision between two cars?

The total momentum after the collision is the same as the total momentum before the collision
The total momentum after the collision is greater than the total momentum before the collision <--
The total momentum after the collision is less than the total momentum before the collision
The total momentum after the collision is zero.

just took the quiz and the answers are

1.C
2.D
3.C
4.A
5.D
6.B
7.C
8.A Trust me, got 100%.

___ is correct 100%

___ is correct

1. False. The direction of the green ball after colliding with the red ball would actually depend on the angle and speed at which they collide, as well as the masses and elasticity of the balls. Momentum alone cannot determine the direction of the green ball after the collision.

2. To calculate momentum, we use the equation momentum = mass × velocity. In this case, the mass of the scooter is given as 20.0 kg and its velocity is 5.00 m/s. Multiplying these values, we get 100 kg m/s. Therefore, the correct answer is 100 kg m/s.

3. The correct answer is "When there is more friction, there is more inertia." Inertia is the resistance of an object to change its state of motion. Friction opposes the motion of objects and tries to bring them to a stop. When there is more friction, it requires more force to overcome this resistance to motion, which means there is more inertia.

4. According to Newton's third law of motion, for every action, there is an equal and opposite reaction. When the jellyfish squeezes its body to push out a stream of water, it exerts a force in one direction, and by Newton's third law, there is an equal and opposite force exerted back on the jellyfish, causing an increase in its inertia.

5. Momentum is calculated by multiplying mass by velocity. The momentum of an object is determined by both its mass and velocity. The momentum of the cheetah is given as 52 kg × 10 m/s, which equals 520 kg m/s. Looking at the options, the only one with less momentum is the 45 kg zebra running at 13 m/s.

6. According to Newton's third law of motion, the force exerted by the ball on the wall (3 N) is equal in magnitude but opposite in direction to the force exerted by the wall on the ball. So, the wall exerts a force of 3 N back on the ball.

7. The correct answer is "it has a high amount of inertia." Inertia is the resistance of an object to change its state of motion. The block of stone is difficult to move because of its high mass, which results in a high amount of inertia. It requires a large force to overcome this inertia and move the block.

8. The correct answer is "The total momentum after the collision is the same as the total momentum before the collision." According to the law of conservation of momentum, the total momentum of a system remains constant before and after a collision, as long as no external forces are acting on the system.