Answer:
im in hardvard dont cheat get amzing grades if you want to go here
Explanation:
F=ma
Force is 50N. Acceleration is 25 m/s^2.
50N=m*25 m/s^2
Divide both sides by 25.
mass=2 kg
Answer:

Explanation:
The formula for kinetic energy is:

We can plug in the given values into the equation:



Answer:
8 seconds
Explanation:
power (P) is defined as the rate at which work is done.
power is measured in Watts (W) , when the work done is measured in Joules (J) and time in seconds
by the definition of power,

The answer is b. The crest.
Hope this helps!