Question

A car is moving on a bridge with a speed of 40 m/s and at a height of 40 m from the earth surface.Calculate the total energy of the car

Answer 1

Answer:

Velocity v= 40m/s

radius r= 400m

d t

d v

= 3m/s

2

Centripetal acceleration

a

c

=

r

v 2

=

400

1600

a

c

=4m/s

2

Tangential acceleration

a

t

=

d t

d v

=

3m/s

2

Total acceleration

a=

2

4 2

=

5m/s

2