A car advertisement states that a car can accelerate from rest to 70000 m/s in 7 seconds. Find the cars acceleration

Acceleration= change in speed/time.

Acceleration = 70,000 m/s / 7 sec.

Acceleration = 10,000 m/s^2

This is an absurd claim. It's obviously a misprint, and nobody who sees it will believe it.

As soon as you give it the gas, the car would cover 3 miles in one second, and any thing or any body riding in that car would pull more than 1,000 G's !

Our technology has no way to produce acceleration like that. But if we could, the car and its driver would be instantly torn apart !

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.