A Roller Coaster train and its passengers have a combined mass of 1375 kg. The train comes over the top of the first hill on a roller coaster, 45 m above the ground with a velocity of 10.5 m/s. a) The train goes down the hill on to another hill 18 m above the ground. What is its velocity on top of the second hill. b) What will be its velocity when it reaches the ground level from the top of the second hill.

A ball is dropped from a window 50 m above the ground. a) How long does it take the ball to reach theground?b) What is its final velocity?2. A pebble was dropped from the window of a building, 80 meters above the ground. a) How many seconds willit take the pebble to reach the ground? b) How fast is it after 2.0 seconds? c) When will its velocity be 25 m/s?3. A stone is tossed upward at the moment a ball is dropped from a height of 25 meters. The stone’s initialvelocity is 25 m/s. At what height will the two meet? In how many seconds.4. A ball is thrown downward with an initial velocity of 20 ft/s. a) How fast is it moving 2s later? b) How fardoes it fall in these time ?

student throws a heavy red ball horizontally from a balcony of a tall building with aninitial speed v0. At the same time, a second student throws a lighter blue ball horizontally fromthe same balcony with an initial speed v0 /2. Ignoring air resistance, which of the followingstatements must be true?a. The red ball hits the ground with the greater speed.b. Both balls hit the ground with the same vertical velocity component.c. Both balls hit the ground with the same angle of impactd. The balls reach the ground at the same instant.     More than one of the statements can be true.

A 4 kg ball is thrown from 6 m tall building (point A) at initial vilocity 28 m/s. As shown in the figure, the ball settled at point B on top of another building with a height of 15 m above the ground . Ignoring air resistance, what is the velocity of the ball just before it strikes the top bf the other building at point B? h2- 36.6 m/s O 33.6 m/s O 24.6 m/s O 18.6 m/s O 196 m/s

5. A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 100 m above the glacier at a speed of 150 m/s. How far short of the target should it drop the package?

A cannonball is launched horizontally off a 50 m high castle wall with a speed of 60 m/s. a) How long will the cannonball be in flight before striking the ground? seconds b) What is the range of the cannonball?

help solve two part question  A. A roller coaster begins at rest at the top of a 30 m hill. Find the velocity at a point 5 m above the bottom of the hill. B. A roller coaster begins at 6 m/s at the top of a 39 m hill. Find the velocity at a point 4 m above the bottom of the hill.

The elevations of the ski jumping hill shown below are as follows: hA = 35 mhB = 2.2 mhC = 5.3 m If the velocity of a ski jumper is measured to be 28.0 m/s at position B, what will be the launch velocity (in m/s) at position C

A 20 N stone is thrown vertically upward from the ground. It is observed that, when it is 15 m above the ground, it travels with a velocity of 25 m / s upwards. What will its speed be when it is thrown? A) 30.31 m/sB) 15.16 m/sC) 18.19 m/sD) 319 m/s

A ball is dropped from a height of 4m above the ground. The velocity of the ball when reaching the ground is a. 6.26 m/s b. -9.8 m/s c. 8.85 m/s O d. -8.85 m/s