During the same Olympics, Bolt also set the world record in the 200m dash with a time of 19.30 s. Using the same assumptions as for the 100 m dash (that is, it took him 3.00s to reach maximum speed), what was his maximum speed for this race?

Q: Skid marks at the scene of an accident indicate that a car took 55 m to stop. Assuming that the car…

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Q: Hill A = 5.0 m    Hill B =3.0m A sledder starts from rest atop a 5.0m high hill. She sleds to the…

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Q: A ball is dropped (from rest) from a window and hits the ground with a speed of 5.5m/s. If the ball…

A: The ball is dropped from a height Velocity of the ball when it hits the ground level is Initially,…

Q: An apple is dropped from a tree limb 4.5 m above the ground. What speed would it have when it is…

A: Height of tree H=4.5 m above the ground. We want to calculate the speed of apple when it is halfway…

Q: An apple, starting at rest, falls from a tree branch 2.0 m above the ground. When the apple hits the…

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Q: A bobsled zips down a frictionless ice track starting at 150 m vertical distance up the hill. What…

A: Given information:Initial velocity of the sled (u) = 0Total height of the mountain (H) = 150 mThe…

Q: A 3kg ball is dropped from rest in the -y direction from a 10m tall building.  Ignore air…

A: Take the top of the building to be y=0 and the downward direction to be positive. The equation of…

Q: A basketball starts from rest and accelerates with an acceleration of 0.395 m/s? while moving down a…

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Q: A ball is dropped from an ocean cliff. The sound of the ball splashing into the ocean is heard 4.0 s…

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Q: A small block is released from rest at the top of a frictionless incline. The block travels a…

A: The kinematic equations of motion are- 1) v=u+at2) s=ut+12at23) v2=u2+2as where,u is initial…

Q: The cannon on a battleship can fire a shell a maximum distance of 32.0 km. Calculate the initial…

A: Maximum  distance = R = 32 km = 32000 m

Q: If I toss a ball straight up with an initial velocity of 96ft/s, how long will it take for the ball…

A: Given data:  Initial velocity (Vi) = 96 ft/s, upward  Acceleration due to gravity (g) = 32 ft/s2,…

Q: Rosana takes her puppy for a walk, but they can't stray too far from home or the puppy gets nervous!…

A: Speed = Total distance /Total time

Q: A rock is thrown from a bridge 21.5 m above water with an initial speed of 14 m/s.   Assuming…

A: Given data: The height above water is h=21.5 m. Initial speed is u=14 m/s.

Q: how tall is the building?

A: Given data: The final velocity attained by the water balloon is: v = 40.5 m/s The height of the…

Q: A ball thrown vertically upward is caught by the thrower after 2.00 s. Find (a) the initial speed of…

A: The ball is thrown vertically upward and it comes back to the thrower. Total time taken= Time of…

Q: the base of a frictionless icy hill that rises at 25.0∘ above the horizontal, a toboggan has a speed…

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Q: The position of a cart is given by = 1.8 t² î - 3.3 tĵ+ 4.9 k. Determine the instantaneous velocity…

A: The rate of change in displacement (s) is referred to as velocity (v). v = ds/dt The rate of change…

Q: A waterslide is 42m long and has a vertical drop of 12m. If a 60kg woman starts down the slide with…

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Q: The best rebounders in basketbal have a vertical leap of about 111.13 cm. What is their initial…

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Q: A man on a motorcycle plans to make a jump as shown in the figure. If he leaves the ramp with speed…

A: To determine the maximum height above the end of the ramp, we need to use the…

Q: 8%) Problem 2: When you drive to work on a winding road, the odometer of your car changes from 27120…

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Q: A rock is thrown from a bridge 19.5 m above water with an initial speed of 17 m/s. Assuming…

A: According to the law of conservation of energy,

Q: Tennis balls are tested by measuring their bounce when dropped from a height of approximately 2.5 m.…

A: To determine the final speed of a tennis ball dropped from a height of 2.5 meters, we can use…

Q: If an object is dropped from the top of a building and it reaches the ground at t = 4 s then the…

A: Given data:  Initial velocity (Vi) = 0 m/s Time (t) = 4 s Air resistance is negligible g = 9.8 m/s2…

Q: 12. waiting to throw a football at a 5 foot target. Dobby throws the ball at a speed of 52 ft/sec.…

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Q: Meagan is running an obstacle course. The tenth obstacle is called the "Spider Climb", where she…

A: Given data, Weight of Meagan = 125 Ib = 550 N Height of Meagan = 5'6" = 168 cm

Q: how fast will she be traveling (v2 = ?) when she reaches the bottom?

A: 18.065 m/s

Q: A 72kg bungee jumper jumps from a bridge. She is tied to a bungee cord, whose unstretched length is…

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Q: You throw a toy straight up into the air with an initial speed of 5.5 m/s. How high will it go? ( no…

A: The answer is 1.5 m. Using v^2=u^2+2as Here v=0 ,u=5.5, a=-9.8 , S=? S=5.5^2/2×9.8

Q: A ball is thrown from a height of 0 m so that it lands back on the field at a distance of 24 m from…

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Q: Neglecting friction and air resistance, a car with an initial velocity of 76.5 km/h coasts up a hill…

A: given             initial velocity of car =vi= 76.5 km/h  = 21.25 m/s             final velocity of…

Q: Walk along a long straight level path in the woods you go 30 m in 6.2 s, stop for 32 s, and then…

A: Given Data : The initial distance travelled in the woods is given as d1 = 30 m. The time taken to…

Q: Falls resulting in hip fractures are a major cause of injury and even death to the elderly.…

A: Given data,Initial speed, vi = 2.0  m/sFinal speed, vf = 1.3  m/sCompression distance, d=2.0 cm =…

Q: A boy tosses a coin straight up to 2.2 m. Suppose the height when the coin leaves his hand is 1.3 m.…

A: Initial height of the coin in boy's hand = 1.3 m The height of the coin when it tosses = 2.2 m The…

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –