Question

Students wanted to see if the distance a marble rolled down a

ramp changed the force it had. They allowed a marble to roll
down the ramp from different starting points and strike a second
marble.
To determine if the force of the rolling marble changed, what
should the students measure?

Answer 1

Answer:C

Step-by-step explanation:

Answer 2

Answer: C

Step-by-step explanation:

if the mass stays constant, measuring mass would be useless (A is wrong). while the distance is good knowledge, it isnt nessecary in solving for acceleration (which we need to find the force using F=ma). only time is nessecary, since it is used in all kinematics equations. use the one without distance (v=v0+at) (eliminating B) to get a.

Direction is useless, probably common sense