Question

A ball has a mass of 140 g. What is the force needed to accelerate the ball at 25 m/s2? (Formula: F=ma) 3.5 N 115 N 165 N 4.5

Answer 1

the answer is A. 3.5

Answer 2

3.5 Newton

Step-by-step explanation:

We are given;

Mass of the ball = 140 g

Acceleration = 25 m/s²

Required to find the force;

• According to Newton's second law of motion, the resultant force on a body in motion and the rate of change in linear momentum are directly proportional.

• That is;
  `F \alpha (Mv-Mu)/(t)`

• Thus; F = ma , where F is the resultant force, m is the mass and a is the acceleration.

To get the force we substitute the value of m and a in the formula;

Therefore;

F = 0.14 kg × 25 m/s²

= 3.5 N

Hence, the force needed to accelerate the ball is 3.5 N