Raindrops fall 1700 m from a cloud to the ground. (a) If they were not slowed by air resistance, how fast would the drops be moving when they struck the ground? (b) Would it be safe to walk outside during a rainstorm?

Q: ? (b) How long was it falling?

A: Given: A speed of pipe wrench strick is  v = 28 m/s Need to find the height was it inadvertently…

Q: A soccer player kicks a rock horizontally off a 44 m high cliff into a pool of water. If the player…

A:

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: A car travels first 1/3 of the distance AB at 30 km/hr, next 1/3 of the distance at 40 km/hr, last…

A: Given value--- first speed = 30 km/ h. second speed = 40 km/h . third speed = 24 km/h . We have to…

Q: A man stands on the top of a 725 m building and drops a coin from the top of the building. How fast…

A:

Q: An object is shot straight up from the ground with an initial velocity of 20 m/s. How high above the…

A: Given: The initial speed of the object is 20 m/s. The time interval from maximum height is 1 s.

Q: A parachutist after bailing out falls 50 m without friction. When parachute opens, it decelerates at…

A:

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

A:

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: Person A jogs east at a speed of 5 meters per second for 3 minutes, then turns north and jogs at 4…

A:

Q: Suppose a person drops 20.0 m (about 5 floors) from a burning building and onto an air bag. (a) What…

A: In this question we have to determine the maximum speed when a person falls from a height of 20 m.…

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: 4. A lifeguard is standing on the beach 15 meters from the water when she spots a nonswimmer 15…

A: Given: h=15m, u=5m/s, v=2m/s, d=100m  (a) The time taken by the lifeguard to reach the point on…

Q: After 3 seconds the speed of the rock is ____ m/s.

A:

Q: A baseball player throws a ball into the air with an initial speed of 27 m/s [up]. Ignore air…

A: The point of launch of ball is taken as origin, upward direction is positive and downward direction…

Q: If it weren't for air resistance, raindrops would be dangerous! If a raindrop initially at rest in a…

A: Given u = 0 t = 16 sec

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: (a) With what speed must a ball be thrown vertically from ground level to rise to a maximum height…

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Q: 2.31 • (a) If a flea can jump straight up to a height of 0.440 m, what is its initial speed as it…

A:

Q: A stone is thrown vertically down from the top of a tower 100 m high with an initial speed of 30…

A: Given data The height of the tower is h = 100 m The initial speed of the stone is u = 30 m/s

Q: a ball which is dropped from the top of a building strikes the ground with a speed of 30m/s. assume…

A: Given data:  Initial velocity (u) = 0 m/s Final velocity (v) = 30 m/s Air resistance is negligible…

Q: A particle leaves the origin with an initial velocity i = (4.88i) m/s and a constant acceleration á…

A:

Q: A boy on cliff 49m high drops a stone. One second later, he throws a second stone after the first.…

A: Given: The height of the cliff is 49 m. The initial velocity of the first stone is 0 m/s. The both…

Q: An ultrasound doppler meter is used to detect motion for an alarm system. The unit emits an…

A:

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: An object of mass 5.9 kg moves along a flat surface and then up an incline with a steepness of 7.8°.…

A:

Q: A fish swims 450 m [E] then 250 m [W] in 25 seconds. What is the average velocity of the fish?

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Q: What is the displacement of the object after 3.0 s?

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: The initial speed of a projectile fired upwards from ground level is 20 m/s, what its maximum…

A:

Q: An ultrasound doppler meter is used to detect motion for an alarm system. The unit emits an…

A:

Q: At the edge of a 12 -m-tall building, two children throw rocks at 10 m/s, one upward and one…

A: During the upward motion, we take the value of the acceleration of the rock as negative and during…

Q: A tourist at a rim of a canyon yells "hello!" toward the opposite side. She hears the echo "hello"…

A: Given data The speed of the sound is given as v = 340 m/s. The time duration to hear the echo sound…

Q: A 1 kg ball is dropped from a height 3 m above the ground and upon striking the ground bounces up a…

A: mass of ball = 1 kg Initial height = 3 m final height after bouncing = 2 m

Q: (a) How long would it take an object to fall 100m on the moon (g = 1.6m/s/s) if dropped from rest?…

A: Given Data: The height of fall is, s=100 m The acceleration due to gravity on the moon is, g=1.6…

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 –