Estimate the average force exerted by a shot-putter on a 7.0-kg shot if the shot is moved through a distance of 2.8 m and is released with a speed of 13 m/s

The force is 211.19 N.

Explanation:

Given that,

Mass = 7.0 kg

Distance = 2.8 m

Speed = 13 m/s

We need to calculate the acceleration

Using equation of motion

Put the value in the equation

We need to calculate the force

Using newton's second law

Put the value into the formula

Hence, The force is 211.19 N.

c)as speed changes, wavelength and frequency change.

everything changes!

because growing process had stoped after 4-5 year