Question

1. dividing the total distance traveled by the total time is how to calculate * 1 point

o average acceleration.

o average speed.

o average velocity

o average distance

1. . sandra pushed a wooden block and it slid across the floor. the * 1 point

wooden block gradually slowed down and stopped after moving 10 meters.
why did the block stop moving?

o the floor exerted a force that is opposite to the direction of the blocks motion

o the block ran out of force.

o the floor absorbs force from the block

o all objects stop moving because their natural state is to be still.

1. how does newtons third law explain how a rocket takes off? * 1 point

o the rockets acceleration is positive, while the gasses acceleration is negative but
the direction is the same

o the rocket is at rest until ignition.

o gravity of space pulls rocket up

Explanation:

Question 11

Average speed is calculated by dividing the total distance traveled by the total time taken. Average acceleration is the change in velocity over time. Average velocity is displacement (a vector quantity) over time. There is no such thing as average distance in this context.

According to Newton's first law, an object in motion will stay in motion unless acted upon by an external force. In this case, the floor exerts a frictional force (opposite to the direction of the block's motion) which slows the block down. Objects don't "run out of force" as force is not a conserved quantity like energy in this sense. The floor doesn't "absorb" force - it exerts a reaction force (friction). And the idea that all objects' natural state is to be still is incorrect (objects can be in a state of uniform motion as per Newton's first law in the absence of net external forces).

Newton's third law states that for every action, there is an equal and opposite reaction. When a rocket expels gas (action force), the gas exerts an equal and opposite force on the rocket (reaction force), propelling it upwards. The option about the rocket being at rest until ignition relates more to Newton's first law. Gravity of space pulling the rocket up is incorrect (gravity near Earth pulls down, and in space, the rocket's motion is due to the expulsion of gas as per Newton's third law). The option about acceleration directions is not a correct explanation of Newton's third law in the context of rocket take - off. Since the options provided seem to be incomplete (the correct Newton's third law - based explanation is missing in the given options, but if we assume there was a proper third - law related option), we can analyze the given ones.

Answer:

average speed

Question 12