A boy is exerting a force of 70 N at a 50-degree angle on a lawn mower. He is accelerating at 1.8 m/s2. Round the answers to the nearest whole number. What is the mass of the lawn mower?

⇒ 25 kg

What is the normal force exerted on the lawn mower?

⇒ 299 N

Explanation:

Given that,

Force, F = 70 N

Angle,

Acceleration of the boy, a = 1.8 m/s²

(a) Net force is equal to the product of mass and acceleration. So,

(2) Normal force = upward force

So,

Hence, mass is 38.89 kg and the normal force is 245.23 N.

the independent variable, or the one that is intentionally manipulated is the speed.

im sorry i dont know