In an experiment, students measure the position x of a cart as a function of time t for a cart that starts at rest and moves with a constant acceleration. The following data are collected for the cart. t(s) x(m)
0 0
1 4
2 16
3 36
4 64

The acceleration of the cart is most nearly:

Given :

Initial velocity , u = 0 m/s² .

To Find :

The acceleration of the cart.

Solution :

Since, acceleration is constant.

Using equation of motion :

Putting, t = 1 s  and x = 4 m in above equation, we get :

Therefore, the acceleration of the cart is 8 m/s².

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.