Mechanics | Relativity Answers

a car has an initial velocity of 30m/s and an acceleration of -5 m/s². Find its displacement after 10 seconds.

Axel leaves his house, drives 23 km due North, then turns onto a street and continues in a direction 60° N of E for 40 km and finally turns onto the highway due East for 20 km. What is his total displacement from his house?

Block B (mass Mb) is sitting on a frictionless table attached to a pulley on both ends. A block C (mass Mc) is sitting on top of block B (frictionless contact) attached to the pulley with a massless string on the left hand side of B. On the right hand pulley a block A (mass Ma) is hanging downwards. What is the acceleration of block A with respect to block C?

Yumi is riding the Giant Drop at Great America. If Upton free falls for 4.70 seconds, what will be her final velocity and how far will he fall?

A body at rest is given an initial uniform acceleration of 8m/s^2 for 30sec after which the acceleration is increased to 5m/s^2 for the next 20sec.calculate the maximum speed attained during motion,average retardation as the body is been brought to rest,total distance travelled during the first 50sec and the average speed during the same interval

Show that vector A,B and C weither they are coplanar or not.

A jet traveling at a speed of 1.20 X 10° m/s executes a vertical loop with a radius of 5.00 x 10° m. Find the magnitude of the force of the seat on a 70.0-kg pilot at (a) the top and (b) the bottom of the loop.

A 50.0-kg child stands at the rim of a merry-go-round of radius 2.00 m, rotating with an angular speed of 3.00 rad/s. (a) What is the child's centripetal acceleration? (b) What is the minimum force between her feet and the floor of the carousel that is required to keep her in the circular path? (c) What minimum coefficient of static friction is required? Is the answer you found reasonable? In other words, is she likely to stay on the merry-go-round?

Suppose a block with a mass of 2.50 kg is resting on a ramp. If the coef-

ficient of static friction between the block and ramp is 0.350, what maximum angle can

the ramp make with the horizontal before the block starts to slip down?