Question

1. what is an example of how friction can be helpful?

a. a skateboard ramp.
b. a seatbelt in a car.
c. the brakes on a car.
d. the wheels on a bicycle.

1. if you kick a bowling ball and a tennis ball with the same amount of force, according to newtons

second law of motion, what will happen?
a. the tennis ball will travel farther than the bowling ball.
b. the bowling ball will travel farther than the tennis ball.
c. the bowling ball will travel faster, but cover a shorter distance.
d. the balls will travel the same distance.

1. the law of reaction.

Explanation:

Step1: Recall Newton's Second Law

Newton's Second Law is \(F = ma\) (Force = mass × acceleration). When the same force \(F\) is applied, \(a=\frac{F}{m}\). The tennis ball has a smaller mass \(m\) compared to the bowling ball.

Step2: Analyze acceleration

Since \(a=\frac{F}{m}\) and \(F\) is the same, for a smaller \(m\) (tennis ball), the acceleration \(a\) is larger. Using the kinematic equation \(s = v_0t+\frac{1}{2}at^{2}\) (assuming \(v_0 = 0\) if starting from rest), \(s=\frac{1}{2}at^{2}\). A larger \(a\) (for tennis ball) means a larger distance \(s\) over the same time of force - application (or until friction stops them, but the initial acceleration effect is dominant here as per the law's application in the context of force - mass - acceleration relation).

Answer:

a. The tennis ball will travel farther than the bowling ball.