Question

The velocity-time graph of a coin moving on a table is shown in the below figure. If the mass of the coin is 20 g, then how much force does the table exert on the coin to bring it to rest?

Answer 1

As we know that slope of velocity time graph gives acceleration so acceleration of the coin is = (v-u)/t= (0-24)/8= -3ms^-2

And force= mass x accelaration

Forece= 20/1000 x -3/100 N

Forece= -6X10⁴ N