The velocity is 60 because you divide your distance by your time (240÷4=60)
Answer:
Angular acceleration, is 
Explanation:
Given that,
Initial speed of the drill, 
After 4.28 s of constant angular acceleration it turns at a rate of 28940 rev/min, final angular speed, 
We need to find the drill’s angular acceleration. It is given by the rate of change of angular velocity.

So, the drill's angular acceleration is
.
B. cart B
Explanation:
The acceleration of each cart is given by Newton's second law:


where F is the force applied, a is the acceleration and m is the cart's mass.
The force F applied is the same for the two carts, however the mass of cart A (mA) is twice than the mass of cart B (mB), so we can rewrite the two accelerations:


we see that the acceleration of cart B is twice the acceleration of cart A, therefore cart B will move faster and will win the race.
A health book will define stress as “The reaction of the body and mind to everyday challenges and demands”
Stress is normal.
Stress is a feeling that can make you feel anger frustrated or even upset. Stress can be caused by negativity around you a lot you’re having to deal with or even nervousness.
A force of 5 lbs
hope this helped