7) A force of 186 N acts on a 7.3-kg bowling ball for 0.40 s. What is the change in velocity of the bowling ball?
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A: Solution: Given Values, Force(F)=10 N Mass(m)=1 Kg Time (t)=2 s
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A: Given data: Mass (m) = 0.5 kg Initial speed = 15 m/s Speed after collision = 0.7 m/s Contact time…
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A: Here,m = 2.1 kgv = 20 m/su = 18 m/st = 0.19 sec
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Q: A high-speed photograph of a club hitting a golf ball is shown in the figure below. The club was in…
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A: Solution: Given that m = 2.7 g = 2.7 x 10-3 kg v = 1150 ft/s = 350.52 m/s thickness, t = 0.8 inch =…
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A: Mass of apple ( m) = 0.11 kg Height of tree branch ( h ) = 0.065 m Sinks distance of apple ( d ) =…
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A: To find the final velocity of the train cars after they collide, we can apply the principle of…
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- A 0.6 Kg football is thrown with a velocity of 22 m/s to left. A stationary receiver catches the ball and brings it to rest in 0.03 s. What is the force exerted on the ball by the receiver? Show the procedure, result with units and directionA 76.1 kg astronaut of holding a 12.3 kg tool pack while drifting at 10.6 m/s to the right. She throws the tool pack away so that it is drifting at 1.5 m/s to the left. How fast is she moving after the throw? Assume that they are out in deep space with no other forces acting on them.After falling from rest from a height of 31 m, a 0.60-kg ball rebounds upward, reaching a height of 21 m. If the contact between ball and ground lasted 2.5 ms, what average force was exerted on the ball?
- A car (VW) and a truck (C) collide inelastically (stick together). The impact is made in a very short time of t= 0.1 s. Initial speed Vvw=40.0 m/s Cv=30 m/s Masses mvw = 900.0 kg mc = 2000.0 kg Find the final velocity of the vehicles. Find the average acceleration of each vehicle Find the average force over each vehicle. Find the initial kinetic energy. Find the final kinetic energy.2. A 60kg skateboarder is initially at rest on top of a 8kg skateboard. The skateboarder then steps forward off the skateboard with a velocity of 0.5 m/s forward. Determine the velocity obtained by the skateboard itself.1.50 kg cart 1.50 kg cart 1.50 kg cart 0.30 kg cart 1.50 kg cart 1.50 kg cart 0.30 kg cart 1.50 kg cart 1.50 kg cart Three carts all sit along a level track. A 10-N force is applied to the red cart on the left (Cart 1) for 1 s. After the force has subsided, Cart 1 collides with the blue cart in the middle (Cart 2), that is initially moving leftward at 9 m/s leftward. After the collision, Cart 2 continues forward until it collides with the red cart on the right (Cart 3) completely inelastically.
- A 1,000 kg car traveling at 40 m/s collides with a brick wall. The car is in contact with the wall for 0.08 seconds before it bounces back with a smaller velocity. Which of the following would result in smallest contact force from the wall on the car? Group of answer choices Increasing the contact time to 3 seconds Decreasing the car’s velocity to 20 m/s Decreasing the contact time to 0.004 seconds Decreasing the car’s mass to 500 kgA 12000 kg railroad car travelling at 10 m/s strikes a second car and comes to rest in 2 seconds. What average force was exerted to stop the first car? a O b c Od 120,000 N 60,000 N 24,000 N 240,000 N) A car with mass 996 kg moving at 28 m/s hits a giant bag of marshmallows. The bag slows the car down, but it is unable to completely stop it because it ruptures at Dt = 1.8 s after the car hits, scattering marshmallows all over the countryside. Suppose the bag exerts a force on the car that depends on time (t) given by F = -At2; A = 7.2 x 103 N/s2 when t is in seconds from the moment the car hits the bag (t = 0) until the moment the bag ruptures. What is the speed of the car after the bag ruptures? (answer: 14 m/s)