A rock is thrown straight up with an initial velocity of 25 m/s. What maximum height will the rock reach before starting to fall downward?
A rock is thrown straight up with an initial velocity of 25 m/s. What maximum height...
3. A ball is thrown straight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and the acceleration as the ball is coming down. (1 mark) a) Both its velocity and its acceleration point upward b) Its velocity points downwards and its acceleration points upwards c) Its velocity points upwards and its acceleration points downwards d) Both its velocity and its acceleration point downwards. 4. A man stands on...
A ball is thrown with in an initial velocity of 31.4 m/s straight up. What is the maximum height it reaches? Number Units How long is it in the air? NumberUnits
A rock is thrown straight downward from a tree limb with an initial velocity v_0. The rock has constant downward acceleration of 10 m/s^2 during its fall. The rock moves 6 times as far during the first 4 seconds as during the first 1 second of tall. What is the value (magnitude only) of v_0?
A rock takes 3.2 s to hit the ground when it is thrown straight up from the cliff with an initial velocity of 8.4 m/s. Calculate the height of the cliff (in meters). Using that information, how long would it take to reach the ground if the rock is thrown straight down with the same speed?
A rock is thrown straight vertically upward with an initial velocity of 15 m/s. Ignore energy lost to air friction. The rock will rise to a maximum height of The velocity of the rock at half that maximum height is A Hooke's law spring is compressed 12 cm from equilibrium and the potential energy stored is 3.6 J. The spring constant in this case is The spring is then used to launch a mass of 50 gram along a frictionless...
A rock is thrown straight downward from a tree limb with an initial velocity v0. The rock has constant downward acceleration of 10 m/s2 during its fall. The rock moves 9 times as far during the first 3 seconds as during the first 1 second of fall. What is the value (magnitude only) of v0?
wall 3.60 m high throws a rock straight up with speed 7.50 m/s from a height of 1.70 m above the ground. (a) Will the rock reach the top of the wall? Yes No (b) If so, what is its speed at the top? If not, what initial speed must it have to reach the top? m/s ) Find the change in speed of a rock thrown straight down from the top of the wall at an initial speed of...
8. A 1.50 kg rock is thrown straight up with an initial velocity of 14.9 m/s from a cliff. What is the impulse received from the force of gravity over the next 0.5 s? Assume positive direction up. (a) - 7.35 N.S (b) 29.35 Nos. (c) - 37.35 N:s (d) 37.35 N:s
A rock takes 2.40 s to hit the ground when it is thrown straight up from the cliff with an initial velocity of 8.17 m/s. How long (in s) would it take to reach the ground if it is thrown straight down with the same speed?
3. A water balloon is thrown vertically up with the initial velocity 20 m/s from a balcony 30 m above the ground. (a) What is maximum height above the ground the balloon will reach? (b) How much time will it take to reach the maximum height? (c) How much time will it take to reach the ground? (d) What is the balloon's velocity at the instant just before it hits the ground? (Be sure to include the correct signs)