standing on a skateboard, initially at rest, and a friend throws a very heavy ball towards you. You can either catch the object or deflect it back towards your friend (assume it moves away from you with the same speed as it was originally thrown if deflected). What should
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Consider standing on a skateboard, initially at rest, and a friend throws a very heavy ball towards
you. You can either catch the object or deflect it back towards your friend (assume it moves away
from you with the same speed as it was originally thrown if deflected). What should you do to
MINIMIZE your speed on the skateboard? Provide correct justification for credit.
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- Timmy had stopped his cart with a of mass 500 kg just before a 30degree hill covered in ice. He was stuck from behind by a 1500 kg coach - of mass1500 kg – travelling at 20 m/s. The two vehicles stuck together and slid up the hill. How far up the slope did they go?question 59 please10 kg weight starts at rest and then pushed rightly by a force of 59 N for 8 s on a horizontal, frictionless floor. force is removed, the weight hits a second weight with mass M, that is at first at rest, both move together at 25 m/s. Wha's the speed of the 10 kg weight after being pushed for 8 s (and before the collision)?
- A 400tball player is preparing to punt the ball down the 3ield. He dropsthe ballrom rest andatgalls vertically l:emdown ontu his ootis Ater he kicks ituthe baili leaverthe I 07 with a specd 07 15 mis at an angle 51°above the hur nontal. t PartA: Whatt ls the magntude 07 the impulse de liver eol to the ball, in kil0gram meters per second, as he Kicks it? An American 4atball has a mass 07 460 g . J= ? PartB:Atwhat angle, in degrees above the horizontali s yne impulue delver ed to the qu0tball? 0=?ASK YO 16. DETAILS SERCP11 6.A.P.074. A car of massm moving at a speed v, collides and couples with the back of a truck of mass 2m moving initially in the same direction as the car at a lower speed v,. (a) What is the speed v, of the two vehicles immediately after the collision? (Use any variable or symbol stated above as necessary.) V = (b) What is the change in kinetic energy of the car-truck system in the collision? (Use any variable or symbol stated above as necessary.) AKE = Submit Answer MacBook Air 47 F9 F8 eSC F6 46 F3 F4 %23 24 % & 2 3 4. 6 T Y F G H IN V 5 R [IA 0.35 kg croquet ball is initially at rest on the grass.When the ball is struck by a mallet , the aveage foce exerted on it is 250 N . If the ball's speed after being struct is 3.2 m/s , how long was the mallet in contact with the ball?
- A railroad car of mass M moving at a speed v 1 collides and couples with twocoupled railroad cars, each of the same mass M and movingin the same direction at a speed v 2. (a) What is the speed vf ofthe three coupled cars after the collision in terms of v 1 and v 2?(b) How much kinetic energy is lost in the collision? Answerin terms of M, v 1, and v 2.The Merlin rocket engines developed by SpaceX can produce 7.44 x 105 N of instantaneous thrust with exhaust speed of 3.05 x 10³ m/s in vacuum. What mass of fuel does the engine burn each second to produce this thrust? (Enter your answer in kg/s.) HINT kg/sI would appreciate some hwlp with this question. Thanks! A model rocket consisting of a 61.0-g chassis and a 30.5-g engine is taken on an interstellar mission and fired in outer space. The engine produces 5.00 N of thrust while expending 13.0 g of fuel at a constant rate during a 2.04-s burn. (Assume the mass of the engine includes the mass of the fuel.) (a) What is the average exhaust speed of this rocket's engine? (b) If the rocket starts from rest, what is its final velocity? (Assume the thrust to be in the positive direction. Indicate the direction with the sign of your answer.)