Question

A toy car was moving whit a speed of 20 cm/s its speed became 50 m/s after traversing a distens of 1m. Calculate the acceleration of the car

Answer 1

a

t

=3m/s

2

v=20m/s

r=100m

Centripetal acceleration,

a

c

=

r

v

2

a

c

=

100

20×20

=4m/s

2

The resultant acceleration,

a=

(a

t

)

2

+(a

c

)

2

a=

(3)

2

+(4)

2

=

25

=5m/s

2