A bike has -30 N of frictional force slowing it down. How much force would you need to exert to make the bike speed up?
a) More than 30N
b) Depends on your mass
C) 30N
d) Less than 30N

B

Explanation:

This is because we don't no how much force we need to make the speed of a bike

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

there are no atoms