A rock is dropped from the top of a building. Rock starts from rest and it takes 7 seconds to reach the ground. How far did the rock travel in 7 seonds. Ignore air drag and friction. Use g =9.8m/s2.

Q: Boy runs around a circular track of radius 65 m at a speed of 6 m/s. What is his displacement after…

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Q: A truck starts from rest and reaches a speed of 60km/h in 3 minutes. The acceleration of the truck…

A: Given: Initial speed (u) = 0 m/s; Final speed (v) = 60 km/h = 60 x 5/18 = 50/3 m/s; time (t) = 3 x…

Q: You throw a ball straight up from a roof of a building. The ball leaves your hand at a point even…

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Q: A rock, thrown upward was travelling at a speed of 4 m/s when its height was 4m. Find the speed of…

A: Given: The initial speed of the rock is 4 m/s vertically upward. The height of the object from the…

Q: A car is moving along a straight road with an initial velocity of v=35 m/s and an acceleration, a=2…

A: solution as

Q: 1. What is the average velocity of an airplane that travels a distance of 10,500 meters in 40…

A: GivenDistance travelled by airplane = 10500mTime = 40 secTo findAverage Velocity = ?

Q: 6. If an object is dropped from the top of a ledge, what is the object's initial velocity?

A: Here, According to the question, the object is dropped. So, it’s basically free fall as no force is…

Q: m in 0.5 Hour. What was her verage speed?

A: GivenDistance travelled by car =10 kmTime taken by car=0.5 hour

Q: A truck travels with a speed of 54 mi/h. This speed in S.I. units is (Given 1 mile = 1.609 km) O a.…

A: Given : v=54mi/h   The SI unit of speed is m/s. Let us convert the following unit to SI unit :  1…

Q: A truck travels with a speed of 59 mi/h. This speed in S.I. units is (Given 1 mile = 1.609 km) O a.…

A: SI Unit of speed is metres per second  1 mile per hour = 1.609 km /hr Now converting km/hr  to  m/s…

Q: A giant boulder is traveling down a hill at a rate of 20 m/s. You are located 1 km away from the…

A: Given : Speed (v) = 20 m/s Distance (d) = 1 km = 1000 m

Q: 46. What is the approximate braking distance for a car traveling at 75 mph once the brakes are…

A: The speed of the car is given as u=75 mph

Q: You are riding a donkey that gets scared by an earthquake. If the donkey was originally traveling at…

A: Given: The initial velocity of the donkey is 12.5 m/s. The final velocity of the donkey is 13.7 m/s.…

Q: A ball dropped from a height of 30 cm, takes 0.6067 s to reach the ground. What is the acceleration…

A: As h=ut+1/2gt2u=0

Q: 2. A stone is thrown vertically upward with an initial velocity of 10m/s in a diving cliff 22m above…

A: from the theorem of conservation of energy, the total energy of the stone will remain constant at…

Q: 1. A car accelerates from rest for 6 seconds with a constant acceleration of 1.5 m/s?. Find the…

A: Given  Vi = 0 acceleration ( a ) = 1.5 m/s2 We   have   to  find  out  velocity…

Q: A 4 kg bowling ball is dropped from a building, and accelerates down toward the earth at 9.8 m/s^2.…

A: Given data:  A 4 kg bowling ball dropped from the building Acceleration = 9.8 m/s2, down towards the…

Q: Speed of a car is 50 m/s and after 10 seconds its speed is 40 m/s. Determine acceleration of the…

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Q: In coming to a stop, a car leaves skid marks acceleration of -7.0 m/s². A. Find the initial velocity…

A: Distance = S = 80 m final velocity = V f = 0 ( stop) acceleration= a = -7 m/s2

Q: 1. A bicyclist pedals at a speed of 5.0 m/s. How far does he travel in 2000 seconds?

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Q: A car pulls away from a stop sign with a constant acceleration. After traveling 10 m, its speed is 5…

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Q: 3. A ater after fall

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Q: A car travels 105 m with constant deceleration of 2.4 m/s2 in 3 seconds. What is the initial…

A: Given data: Here, S represents the distance, t represents the time, and a represents the…

Q: Santa Claus' sleigh starts from rest and accelerates at a=30+20t, until its velocity is constant at…

A: Given, Santa Claus sleigh from rest and accelerates.

Q: A ball was dropped from the top of a building. If the ball was from a height of 134 meters from the…

A: Kinematics.

Q: 19. A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of…

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Q: 1. Is it possible that the magnitude of the speed is also the magnitude of the velocity? Explain…

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Q: 5. An object is launched 15 m/s horizontally. A. Fill in the variables for the object. B. Solve for…

A: Tis is a horizontal projectile projected from 12 m high with a speed of 15 m/s Only acceleration due…

Q: A motorist drove from Bristol to Bath at an average speed of 40 mph and then from Bath to Chippenham…

A: Given  Average speed from Bristol to Bath is               40 mph  Average speed from Bath to…

Q: The graphic shows the speed of a snail. Calculate the acceleration of the snail. a. 2m/s

A: Given  velocity time graph of snail motion.

Q: A biker travels 8 km, north, and then 5 km, south again. Which of these gives the total distance and…

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Q: Wesley drops a rock from rest off the side of a building. The rock falls for 10s before hitting the…

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Q: An automobile with an initial speed of 20 m/s accelerates at a rate of 5 m/s2. Use one of your…

A: Given Initial speed (u) = 20 m/s Acceleration (a) = 5 m/s2 Time (t) = 3 sec Equation of motion, V =u…

Q: 9. An object moved 4.0 m along the positive x-axis in 2.0 s and then again moved 5.0 m along the…

A: Given data:  Displacement (x1) = +4.0 m, in t1 = 2.0 s Displacement (x2) = -5.0 m, in t2 = 3.0 s…

Q: A bike rider started his descent from a hill at 16 km/hr and reached downhill at 59 km/hr. What was…

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Q: A stone is thrown outward, at an angle of 65 degrees with the vertical , into the river from the…

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Q: A skydiver makes a jump into the stadium during an airshow. She waits 15 seconds before pulling her…

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Q: A sprinter accelerates at 2.5 m/s^2 for the first 4 s of a 100 m race, then keeps going at steady…

A: Given data:  Initial speed (v0) = 0 m/s Acceleration (a) = 2.5 m/s2 Time (t) = 4 s Required: Final…