# A toy car runs off the edge of a table

A toy car runs off the edge of a table that is 1.350 m high. The car lands 0.405 m from the base of the table.

(a) How long did it take the car to fall?

_______s

(b) How fast was the car going on the table?

_______ m/s

https://brainmass.com/physics/velocity/toy-car-edge-table-278350

## SOLUTION This solution is **FREE** courtesy of BrainMass!

This problem is projectile motion. Important things to remember is that the projectile motion consists of two components:

1. horizontal component -- it is motion with constant velocity

2. vertical component -- it is a motion with acceleration g=9.8 m/s^2

Denote hight by h=1.35 m and distance from the base by d=0.405 m

b) First of all the initial velocity of the car has zero vertical component, hence h=1/2*g*t^2 will give us the time.

t=sqrt(2*h/g)=sqrt(2*1.35/9.8)=0.52 sec.

Now we know that during this time of 0.52 seconds, the car traveled d=0.405 m with constant horizontal velocity Vo, so

Vo=d/t = 0.405/0.52=0.78 m/s

Answer:

a) 0.52 sec.

b) 0.78 m/s

https://brainmass.com/physics/velocity/toy-car-edge-table-278350