Physics Answers

A child sits at a distance of 5.0 m from the axis of merry-go-round in an amusement park. If the merry-go-round makes 2 rev

in 10.0s, find the (a) tangential speed and (b) centripetal acceleration of the child.

A car 2000kg tied to the rope of 15m whose end is located at the center. If the car is moving at the rate of 8 m/s. Calculate the centripetal force acting on it?

determine the electrical force attraction between to balloons that are charged with the opposite type of charge but the same quantity of charge . The charge on the ballons is 6.0 x 10-7C and they are separated by a distance of 0.50 m

A basketball floats in a bathtub of water. The ball has a mass of 0.5 kg and a diameter of 22 cm.

(a) What is the buoyant force?

(b) What is the volume of water displaced by the ball?

(c) What is the average density of the basketball?

You can use g = 9.8 m/s2

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A ball thrown vertically downward from the top of a building living the throwers hand with the velocity of 10 m per second. If the ball was through from a point 40 m above the ground how long does it take to strike the ground?

Two spherical objects have masses of 66g and 35 g. The gravitational attraction between them is 6.5 x 10-3 N. How far apart are their centers?

Activity:

Find CT, V1, V2, V3 & UT, when C1 = 1F, C2 = 2F, C3 = 3F & QT = 4C.

A body dropped from rest falls half its total path in the last second before it strikes ground. From what height was it dropped?

Student drops a ball from a building and it takes 3 seconds to reach the ground. What was its speed before hitting the ground?

A hammer head, with a mass of 10.0 kg, strikes a nail at a horizontal velocity of 12.2 m/s and comes to rest in a time interval of 0.004 s. Find the impulse imparted to the nail and the average force the hammer exerted on the nail?