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

A.) 3.5 N
B.) 115 N
C.) 165 N
D.) 4.5 N

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)

A.) 3.5 N
B.) 115 N
C.) 165 N
D.) 4.5 N

Shadow · Answer

$$F = ma$$

Shadow · Answer

You have mass and acceleration, input them and calculate the force.

sophiaespinosa · Answer

mmmm ok

sophiaespinosa · Answer

never mind figured out the answer 3.5

Shadow · Answer

k I'll just write out the explanation in case anyone else comes across this question

Shadow · Answer

Before using the formula F = ma, first you need to convert your units

Whilst the mass is given, at 140 grams, it is not in the unit of mass that F = ma. It wants mass in kg. So we convert.

$$\frac{ 140g }{ 1 } \times \frac{ 1 kg }{ 1000 g } = 0.14kg$$

Shadow · Answer

Then we do,

$$F =ma \rightarrow F = 0.14 \times 25 = 3.5 N$$

sophiaespinosa · Answer

ok thanks