a body of mass 4 kg is kept at rest a constant force of 8 kg F starts acting on it find the time taken by body to move through a distance of 20m​

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2