Answer:
I think it is C) Newton's 2nd Law. Bob is pulling the heavier load. He needs a greater force to move as fast as Bill.
Answer:
Hello There!!
Explanation:
The answer is a. The first electric motor ever made.
hope this helps,have a great day!!
~Pinky~
Answer:
k = 22.05 N/m
Explanation:
The potential energy of the mass is converted into potential energy of the spring.
Given:
mass m = 0.27 kg
gravitational constant g = 9.8 m/s²
distance falling/ stretching of spring h = 0.24 m

Solving for k:

The mass of the truck is needed because momentum=mass×velocity.