Question

Which of these are examples of Newton's 1st law of motion. Check all that apply.

a. A book sitting on a desk.
b.A soccer ball coming to a stop after it has been kicked.
c.A motorcycle accelerating as it goes down the street.
dA train going 55mph down a straight track.
eA car turning the right at a crossroads.

Answer 1

a. A book sitting on a desk.

Step-by-step explanation:

an object will stay at rest until an external force is provided

Answer 2

I don't know if this is right but c