Dan steps on the brakes in his toy car which causes a braking force of 700 N to the left. a) If Dan’s car weighs 750 N, then what is the mass of Dan’s car?
b) What is the acceleration of Dan’s car?

76.53 kg; 9.15 m/s² left.

Explanation:

Given the following data;

Weight of car = 750N

Applied force = 700N

a) To find mass

Weight can be defined as the force acting on a body or an object as a result of gravity.

Mathematically,

We know acceleration due to gravity is equal to 9.8 m/s²

Substituting into the equation;

Mass, m = 76.53kg

b) To find the acceleration;

Force is given by the multiplication of mass and acceleration.

Mathematically, Force is;

Where;

Making acceleration (a) the subject, we have;

Substituting into the equation;

Acceleration (a) = 9.15 m/s² left.

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table