What is the mass of a stone moving at a speed of 15 m/s and having a monument at 7.1 kg meters per second

The answer is 0.47 kg

Explanation:

The mass of the object given it's momentum and velocity can be found by using the formula

where

p is the momentum

v is the velocity

We have

We have the final answer as

0.47 kg

Hope this helps you

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.