Field Theory Answers

A student fires a cannonball vertically upwards. The cannonball returns to the ground after a 6.00s flight. Determine all unknowns and answer the following questions. Neglect drag and the initial height and horizontal motion of the cannonball. Use regular metric units (ie. meters).

Acceleration acts to change the direction of the velocity, when it is normal to the velocity

A block weighing 50N rests on a flat surface and a horizontal force of 3N is exerted on it. Determine the frictional force

A tennis ball is dropped from 1.18 m above the ground. It rebounds to a height of 1.05 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s 2 . (Let down be negative.) Answer in units of m/s.

A ball is thrown vertically upward with a speed of +18 m/s. (assume g=10 m/s2

)

a. How high does it rise?

b. How far is the horizontal distance that can be traveled?

c. How long does it take to reach its highest point?

d. How long does the ball take to hit the ground after it reaches its highest point?

e. What is its velocity when it returns to the level from which it started?

A ball is thrown vertically upward with a speed of +18 m/s. (assume g=10 m/s2

)

a. How high does it rise?

coloumbs law is applicable for a)atomic distance b)nuclear distance c)both charged and uncharged particle d)all of these