how much work is done by a 75kg racer when he increases his velocity from 15m/s to 20m/s
Q: A 3 kg ball falls from height of 14 m. What willbe potential energy of the ball after 1 second? Use…
A: Given that, The mass of a ball, m = 3 kg It falls from a height of 14 m. First we find the position…
Q: If an object's speed is increased to 2 times its original speed, the object's kinetic energy will…
A:
Q: 71.0-kg skier starts from rest from the top of a 55-m high slope. What is the speed of the skier on…
A: Given: The mass of the skier is 71 kg. The height of the skier is 55 m. The initial speed of the…
Q: After scoring a point, a rugby catcher, weighing 84 kg, celebrates by jumping 1.20 m on the ground.…
A: Given : m = 84 kg h = 1.20 m
Q: A package with a mass of 40.0 kg slides down a smooth ramp with negligible friction. The package…
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Q: If the skater needs 4176 J of potential energy at the top of the hill, what height must the ramp be?
A: The energy possessed by an object when raised to an height h above the ground is known as the…
Q: A car with a mass of 1.5 x 103 kg accelerates at 0.74 m/sec2 for 60 seconds. How fast is it going in…
A:
Q: A 4 kg ball falls from height of 23 m. What willbe potential energy of the ball after 0.8 second?…
A:
Q: a 6.0 kg rock is dropped from a height of 3.0 m. At what height is the rocks kinetic energy twice…
A: Given , m = 6kg h = 3 m height at which rocks kinetic energy twice its…
Q: Adam drove a bike 1260 m with an average speed of 115m/s. Suppose he applied the brakes to reduce…
A: According to the work-energy theorem, the work done by the brakes will be equal to the change in…
Q: A person drops pebble 1 with mass m1 from a height h, and it hits the floor with kinetic energy K.…
A: Given, mass of the pebble 1, m1 height above the ground, h mass of the pebble 2, m2 height above the…
Q: How much work is required to throw a ball with a mass of 0.46 kg 33.1 m/s? Assume the ball starts at…
A: Given Mass of ball = 0.46 kg Initial velocity of ball = 0 m/s Final velocity of ball = 33.1 m/s We…
Q: A warehouse worker lifts a 10 kg box a half a meter. How much work has the worker done? (Assume g =…
A: Given, Mass of box, m= 10kg, distance, d=12m=0.5 m, and g= 10 m/s2.
Q: What is the kinetic energy of a 45 kg teenager running at a speed of 2.1 m/s? O 21.4 J O 94.5 J O…
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Q: A motorist runs out of gas on a level road 150 m from a gas station. The driver pushes the 1,120 kg…
A: Given: Distance traveled, d=150 m Mass, m=1120 kg Force, F=180 N Formula: Work=Force×distance W=F×d
Q: A frog jumps straight up at 0.7 m/s from 0.6 m above ground. How fast is it after it is about to…
A: Initial velocity = u = 0.7 m/s Initial height = h = 0.6 m Final height below the ground = h' = 0.8 m…
Q: A 53.0-kg skier starts from rest from the top of a 65-m high slope. What is the speed of the skier…
A: In the given question We have to determine the speed of the skier on reaching the bottom.
Q: A 3 kg ball falls from height of 14 m. What willbe potential energy of the ball after 1 second? Use…
A:
Q: A 9 kg ball is dropped from a height of 3.0 m. Determine the speed of the ball just before it hits…
A: According to the work Energy theorem W=12m(v2-u2) where u= initial velocity v= final velocity m=…
Q: A 5 kg ball falls from height of 16 m. What willbe potential energy of the ball after 1 second? Use…
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Q: A 5 kg ball falls from height of 29 m. What willbe potential energy of the ball after 1 second? Use…
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Q: A 0.18 kg ball falls 2.5m. How much work does the force of gravity do on the ball?
A: Here given a ball of mass 0.18 kg falls 2.5 m. We have to find the workdone due to the force of…
Q: A 55 kg snowboarder begins his run at the top of a 50.0 m tall hill with a speed of 0.5 m/s. What is…
A: (given) Mass of snowboarder = 55 kg Speed vi at the top of the hill = 0.5 m/s…
Q: In 1995, Karine Dubouchet of France reached a record speed in downhill skiing. If Dubouchet’s mass…
A: Given, Dubouchet's kinetic energy, E= 9.96*104 J Her mass, m= 51 kg
Q: A sled, of mass 18.6 kg, is stationary when it starts to slide down an icy hill. The hill is 13.0 m…
A: Given data: Initial velocity (u) = 0 m/s Height (h) = 13.0 m Required: The speed of the sled at the…
Q: How much kinetic energy does a student of mass 60. kilograms running at 3.0 meters per second…
A:
Q: Fleas have remarkable jumping ability. A 0.55 mg flea, jumping straight up, would reach a height of…
A: mass = 0.55 mg h = 30 cm Hreality = 20 cm
Q: A saltwater crocodile (Crocodylus porosus) with a mass of 531 kg, is seen chasing prey and reaching…
A: Given, Mass of crocodile, m = 531 kgfinal speed , v = 25.9 km/h =25.9×1000m3600s =7.19 m/sTime taken…
Q: (ou cast a pebble a t is about to land in
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Q: A 1.00 kg object is dropped from a height of 10.0m and loses 20.0 J of energy due to air resistance…
A: Required : Speed of the object just before it hits the ground.
Q: A 2.00 kg object is dropped from a height of 20.0m and loses 25.0 J of energy due to air resistance…
A:
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- While carrying a 20 N box, a 500 N girl runs up the staircase to a 5 m higher. What is the work done on the box?What is the kinetic energy of a 1400 kg car traveling at 5.3 s ? m 7.4 x 10° J 2.0 x 104 J 7.3 x 10 J 2.8 x 107 JA man picks up a 50 kilogram block and carries it up a flight of stairs 10 meters high. He then carries the block back down the stairs and places the block in its original position. What is the NET work done on the block?
- A person is 170 cm tall. He holds a 10 kg object on his head for 10 minutes. How much work is done on the object?* Incorrect. A proton (mass m = 1.67 × 10-27 kg) is being accelerated along a straight line at 2.00 × 10¹1 m/s² in a machine. If the proton has an initial speed of 1.30 x 105 m/s and travels 5.60 cm, what then is (a) its speed and (b) the increase in its kinetic energy? (a) Number i 3.28E-22 (b) Number i Units Units JAlissa dropped a ball from a height of 2000 mm. Find out (a) how long it will take to hit the ground and (b) what would be its velocity when it hits the ground? (c) If mass of the ball is 500 g, what would be its kinetic energy when it hits the ground? (d) What would be its potential energy before its fall?
- Shelly pushes a 40.0 kg box of paper with a force of 196 N along level ground a distance of 30.0 m. How much work does she do on the box of paper?Ahmed (52 kg) was riding his bike (11 kg) at 3.5 m/s when he noticed he was late. He speeds up to 4.6 m/s to make up time. How much work did Ahmed do to speed up?A bird is flying at 3 m/s and its mass m=0.8 kg. Determine its Kinetic Energy. Include units
- A cart moves to the right along a frictionless track. What is the minimum speed of the cart at point 1 such that it can reach point 3? Use g = 10 m/s^2. answer choices: 17.3 m/s 10.0 m/s 14.1 m/s depends on the mass of the cart 20.0 m/sA bride tosses a bouquet of flower through the air with a speed of 2.7 m/s, and it smacks one of her guests in the face. How much kinetic energy does the 0.55 kg flower bouquet have? Answer:How much work is needed to stop a 1330 kg car that is moving straight down the highway at 15 m/s? ( /1) Work = × 105 J