What effort force must be applied to lift an 864 N load with a fixed pulley? A.432 N
B.864 N
C.1728N
D.3456N

1400 kg car has a speed of 27 m/s. if it takes 7 s to stop the car, what is the impulse and the average force acting on the car?

If the new moon happens on january 15th, what shape will it be on february 6th?

If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction