A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope, its speed is 4 m/s But 3 seconds later, at the bottom of the slope, its speed is 22 m/s_What is its acceleration?

Q: ball is dropped from a cliff. The height of the cliff is 180 meters. At what speed does the ball hit…

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Q: A car moves with a speed of 25 m/s. What distance will it travel in a time of 1 hour:

A: distance = speed x time

Q: A car moving with a velocity 10 m/s reaches at 30 m/s in 10 s. What is the acceleration of the car?…

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Q: A racehorse starts from rest in complete 1/8 of a track in 12.5 seconds a track is 1 mile which is…

A: Given, time t = 12.5 s Track length d = 1.67 km 1 mile = 1.609 km .But the question has a different…

Q: A car starts from rest and reaches a velocity of 40 m/s in 10 s, what will its velocity be 5 s…

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Q: A cheetah accelerates constantly from rest to catch a gazelle. The cheetah covers a distance of 40 m…

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Q: A student lifts a 1kg object vertically at a velocity of 1 m/s . What is the magnitude of the force…

A: Given Mass of an object is m = 1 kg Acceleration due to gravity is g=9.80 m/s^2

Q: A car goes from 10m/s to 30m/s in 2.7 seconds? How far did the car travel?

A: Given Initial velocity of car ( u )= 10 m/s Final velocity of car ( v ) = 30 m/s Time taken ( t )=…

Q: A 300kg weight is held aloft by a rope that passes over a pulley and is then tied down. A 100 kg…

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Q: A batter strikes a baseball of mass 0.15 kg with a force of 18,000 N. What is the acceleration of…

A: Answer :-  Given data :-  F = 18000 N m = 0.15 kg

Q: A car has 1 hour and 20 minutes to travel 80 km. The car travels at 16m/sec for the first 30…

A: The distance covered is, x=utx=16 m/s30 minutes60 s1 minutex=28800 mx=28.8 km   thus, the remaining…

Q: D 6.34 m/s Fose N frins 2. A 1000 kg object is rising. Its speed is increasing at 3 m/s². The force…

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Q: on aircraft carriers, catapults are used to accelerate aircraft to flight speeds in a short…

A: The acceleration of the jet is, a=v-ut=70 m/s-0 m/s2.5 s=28 m/s2

Q: A rope exerts a constant horizontal force of 280 N to pull a 50kg crate across the floor. the…

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Q: A stone is thrown straight upward and it rises to a maximum height of 49 m. With what speed was it…

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Q: A force of 40 N stretches a spring 150 cm. What is the spring constant?

A: The force applied to the spring stretches it by distance x than the amount of force is given by,…

Q: Jim is trying to improve his speed on the track so he can qualify for the state championship.  As he…

A: The given values are, vi=70 m/min  =70m1 min×60 s1 min  =1.17 m/svf=106m1 min×60 s1 min   =1.77…

Q: You push a box (mass 3 kg) so that its initial speed is 2.2 m/s. It slides across a rough floor…

A: KE=Wfriction12mv2=μkmgdd=v22μkg

Q: A child is sitting on the outer edge of a merry-go-round that is 18 m in diameter. If makes 5.4…

A: Determine the angular velocity.

Q: A rescue helicopter lifts a 57.7-kg person straight up by means of a cable. The person has an upward…

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Q: A 3,741 kg truck drives along a circular path with a radius of 40.1 m with an acceleration of 4.96…

A: Given data:  Radius (r) = 40.1 m Acceleration (a) = 4.96 m/s2 Required: Velocity (v)

Q: A car starts from rest and accelerates to a speed of 100 km/h in 15 seconds. The acceleration during…

A: distance = velocity x time given  v1 = 100 km/hr = 27.77 m/st1 = 15 sec d1 = 27.77 x 15  = 416.55…

Q: The car speed in the figure is v = 0.3 (9t2 + 2t) m / s it moves on for a short time. The unit of t…

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Q: Consider the figure below: F = 66 N v = ? 10 m f, = 25 N Calculate the speed. a. 15 m/s b. 13 m/s c.…

A: In this question we are given with a block which is being pushed by a force of 66 N. We have to find…

Q: A car was traveling at 20 m/s and then started increasing its speed by 5 m/s for every 10 seconds…

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Q: The difference between speed and velocity is ___. Speed is measurable Speed can change over time…

A: Since we only answer up to 3 sub-parts, we’ll answer first 3. Please resubmit the question and…

Q: 5 m O OO 5m 15 m 20 m 20.7 m e 25.7 m b С d -P

A: Radius of semicircular path    R = 5 m  Total Length of path  L =  πR + 10 m       =  π ×5 m + 10m…

Q: A 72 fireman slide down a 3.2 m pole by applying a frictional force of 377 N against the pole with…

A: Given , mass of fireman , m = 72 kg Height of pole , h = 3.2m Frictional force , f = 377 N…

Q: Evan is just leaving his house to visit his grandmother. Normally, the trip takes him 25 minutes on…

A: Write the formula for the distance in terms of speed and time when the speed is constant.

Q: 12kg box is released from the top of the incline that is 5m long and makes an angle of 40 degrees to…

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Q: A block is sliding along a frictionless surface at 19.1 m/s. The block slides down a hill. At the…

A: Given value--- Initial speed u=19.1m/s Final speed v=37.1 m/s We have to find--- How tall (in…

Q: A car travels at 50 km/hr for 65 km and then slows down to 20 km/hr for another 35 km. What is its…

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Q: A motorcycle rider speeds off a 20-meter-high cliff. How fast must the driver leave the cliff to…

A: Given data: Height of the cliff y =- 20.0 m Height of the cliff from the ground x =100 m

Q: An airplane starts from 19.4 m/s and accelerates at 18.7 m/s2. What is its speed at the end of a…

A: Given data:  Initial velocity (v0 ) = 19.4 m/s Acceleration (a) = 18.7 m/s2 Displacement (x) = 482 m…

Q: A block is sliding along a frictionless surface at 11.1 m/s.  The block slides down a hill.  At the…

A: Given  Initial speed vi=11.1 m/s Final speed vf=36.5 m/s

Q: A 1,865.66 kg car at rest at the top of a hill 20 m high is given a nudge and begins to roll down…

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