Mechanics | Relativity Answers

A ball is batted into the air and the ball found at a point 200 m distance horizontally in

5.0 seconds. Neglecting air resistance. Find the maximum height attain by the ball.

Starting from the center of town, a car travels WEST for 70.0 m, then turns due NORTH for 30.5 m,

and lastly turns EAST for 15.0 m at which point it runs out of gas. Determine the displacement of

the stopped car from the center of the town.

bryle pushes a 50.0 kg sack of rice across a level floor by a horizontal force of 35.0N against a frictional force of 12.0 N. He succeeded in moving the sack to a distance of 5.0m. How much work is done by (a) bryle (b) friction and (c) force of gravity?

Find the Vr of the vectors given below using both the head-to-tail and component methods.

An athlete runs 65.0 km SE the proceeds 50.0 km NE before running 45.0 km NW and 60.0 km W.

Scale = 1.0 cm:10 km

A person holds a book between two of his fingers. The person is able to apply a 20 N force to either side of the pinched book. The frictional coefficient between the fingers and the book is 0.80. (a) Draw a picture with all the relevant forces (normal forces, gravity, friction). (b) What is the heaviest book the person can hold between his two fingers?

a ball is thrown forward horizontally from the top of a cliff with a velocity of 10 ms^-1 the height of the cliff above the ground is 45m calculate:

1. the time to reach the ground

2. the distance from the cliff of the ball on hitting the ground

3. the direction of the ball to the horizontal just before it hits the ground

A car can be slowed down with a constant acceleration of -11 m/s².

Activity 9: Provide the answers to the questions provided.

1. You go outside wearing your face mask and face shield and do some errands. All your

stops are along one straight road. You walk 150m east to the sari-sari store, then buy milk tea at the shop 50m to the east away from the sari-sari store, then go to the 7/11 100m to the east away from the milk tea shop to pay some bills. Afterwards, you walk all the way back home.

a. What distance did you travel when you went to do your errands?

b. What is your displacement from the moment you left your house to coming back

home?

John kicks the ball, and the ball does a projectile motion with an angle of 53o to horizontal with an initial velocity of 10 m/s. What is (a) its maximum height, (b) its maximum distance, and (c) its hangtime?