You and your younger sister (who weighs half as much you do) are at a skating rink. You are both wearing roller skates and are facing each other. What will happen to your and your sister's motion if you push against each other?
Question 1 options:
You move forward and your sister moves backward at a faster rate.
You both move forward, but you accelerate at a greater rate.
You move backward and your sister moves forward at a faster rate.
You both move backward but your sister accelerates at a greater rate.
Question 2 (1 point)
You are standing, completely still, on a completely flat floor. Why do you stay as you are instead of flying into the air?
Question 2 options:
There are no forces acting on you or the floor.
Forces are only acting on the floor.
All of the forces acting on you are balanced.
You are exerting an unbalanced force on the floor.
Question 3 (1 point)
A baseball is thrown at 90 mph from east to west over a distance of 60 ft. What is true of the ball's motion?
Question 3 options:
Its speed is 90 mph to the west.
Its acceleration is 30 mph.
Its velocity is 90 mph to the west.
Its acceleration is 150 mph.
Question 4 (1 point)
A box is pushed 7 m to the left in 3 s. What is the block's average speed to the nearest tenth?
Question 4 options:
2.33 m/s
0.43 m/s
2.3 m/s
0.4 m/s
Question 5 (1 point)
graph
On a graph of distance vs. time, what is true of the motion of the object during its first 6 m of travel?
Question 5 options:
The object was moving at a constant speed.
The object was accelerating.
The object was not moving.
The object was northbound.
Answers: 3
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Answers: 3
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Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?
Answers: 3
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What is the displacement current in the capacitor if the potential difference across the capacitor is increasing at 500,000v/s? express your answer to two significant figures and include the appropriate units.
Answers: 1
You and your younger sister (who weighs half as much you do) are at a skating rink. You are both wea...
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