(Assume there is no friction) A bike starts rolling down a hill at 4.3 m/s . After 12 s it reaches the bottom moving at 11.5 m/s. How long was the hill? Express your answer with the correct number of significant digits.

Explanation:

Given data:

Initial velocity,

Final velocity,

Time,

The acceleration of the bike can be expressed as,

The distance of the hill can be given as,

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it