Question

How high a hill can a car coast up (engine disengaged) if work done by friction is negligible and

its initial speed is 110 km/h?

Answer 1

h= 46.66 m

Step-by-step explanation:

Given that

Initial speed of the car ,u = 110 km/h

We know that

1 km/h= 0.277 m/s

u= 30.55 m/s

lets height gain by car is h.

The final speed of the car will be zero at height h.

v²=u²- 2 g h

v= 0 m/s

0²=30.55²- 2 x 10 x h ( g = 10 m/s²)

h= 46.66 m