Question

HELP ASAP TIMER

Answer 1

Answer:

b  Use a balance to determine the mass of the car. Use a motion sensor to measure the speed of the car at a time of 0s and at time of 5s .

Explanation:

The right way to measure the net force on the car is take the measurement of its mass then find the speed of the car within the time 0s to 5s.

This is because the net force acting on car is given as;

   Force  = mass x acceleration

By using the balance, the mass is determine

 Acceleration is the rate of change of velocity with time.

     Acceleration  = $\frac{v - u}{t}$  

v is the final velocity

u is the initial velocity

t is the time taken

  Now,

         Force  = mass x  $\frac{v - u}{t}$