In physics, a force is said to do work<span> if, when acting, there is a displacement of the point of application in the direction of the force. It is expressed as </span><span>Work done = force (N) X distance (m). From the problem statement, the distance traveled is zero. Therefore, the work done is zero as well.</span>
Answer:
Explanation:
Convert mass of bullet 50g in kg
✯ Divide 50 by 1000
⟹ 50/1000
∴ 0.05 kg
Kinetic energy is related to an object's mass and velocity. The greater the velocity, the greater its kinetic energy will be if the mass remains constant. (so, the 10 m/s one)
Don’t forget about the formulas!
P=E/T
E=P•T
T=E/P
P= 45,000J / 90sec
500W is your answer
