7. A rock is dropped from the top of a tall building. The rock's displacement in the last second before it hits the ground is 45% of the entire distance it falls. How tall is the building?

Q: 2. You look outside of your window in your apartment on the 5th floor. You see a ball going straight…

A: The net force acting on an object equals the product of mass and acceleration of the object. An…

Q: 8. Physics students were modeling the height of a ball once it was dropped from the roof of a 25…

A: initial velocity (v) = 0 msThe height of ball above the ground (h) is given by : h(t) = 300 - 16t2

Q: A stone is thrown downward from a tower with an initial velocity of 3 m/s. The height of tower is 50…

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Q: Two ants pass each other one is moving along the negative x axis and one is moving at 45 degrees to…

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Q: 1. Bob Beamon, an Olympic long jumper, can jump 8.90 meters. How long will he be in the air and how…

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Q: 25. Ahmad and Tariq dive from an overhang into the lake below. Tariq simply drops straight down from…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: 3. You wake up one morning to find yourself in a strange room with opaque walls, and no visible…

A: Write the second kinematic equation. Here, h is the height, u is the initial velocity, t is the…

Q: 6. You and a friend are doing physics experiments by launching rocks into the air with a sling shot.…

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Q: A jeepney and a train are moving together along parallel paths at 30.0 m/s, with the jeepney…

A: Solution:→Case 1     For the jeepney     Initial speed, u = 30 m/s     Acceleration, a = -2.5 m/s2…

Q: The position of a particle as a function of time is given by: F(t) = (8t + 6t³)i + (10-2t²)ĵ where r…

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Q: A white-crowned sparrow flying horizontally with a speed of 1.80 m/s folds its wings and begins to…

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Q: 3. It was a cold rainy evening when Maria decided to end her relationship with Pedro. Pedro, who was…

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Q: You drop an object from rest (initial velocity = 0) from a height of 6.8 metres. What is the final…

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Q: A huge wooden block accidentally falls from rest from the ledge of a 48-meter - high building. When…

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Q: 8. A ball is thrown vertically upward from the edge of a bridge 29.5 m high with an initial speed of…

A: Given :h=29.5 mu=13 m/s (vertically upwards)h→height of the bridgeu→initial velocity of the ball

Q: Two dogs stand facing each other a distance of 105 meters apart. They begin to run towards each…

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Q: An object is fired vertically up from the edge of the top of a 80 m high building. It reaches the…

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Q: A vollyball player hits a ball vertically upwards with an initial velocity of 7.0 m/s. What is the…

A: What is the maximum height the ball attains. given, initial velocity(u)= 7.0 ms-1

Q: questions. How long did the ball remain in the air? What was the ball's speed just before striking…

A: Height = h = 75 m Acceleration = a = 10 m/s2

Q: 9. A ball is dropped from a height y = H> 0 to the ground y = 0. Sketch plots of the position versus…

A: Free fall motion of a body: A body that is released from some height moves only under the effect of…

Q: How much time, at most, does the man have to get out of the way?

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Q: tiger leaps horizontally from a 7.5-m-high rock with a speed of 3.0 m/s. How far from the base of…

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Q: A stone accidentally falls from rest from the edge of a 35-m-high building. When the stone is 14m…

A: Time taken by the stone to reach a height of 14m above the ground is given by:- Then from Kinematic…

Q: A rock is dropped (from rest) from the top of a 73.9-m-tall building. How far above the ground is…

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Q: 1. A ball is caught in a padded mitt. If the deceleration of the ball is 2.19x 10 m/s?, and 2.14 x…

A: The deceleration of the ball, a = -2.19×104 m/s2 The time interval, t = 2.14×10-3 s The final…

Q: 2. A log is floating on swiftly moving water. A stone is dropped from rest from a 75-m high bridge…

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Q: Water drops fall from the edge of a roof at a steady rate. A fifth drop starts to fall just as the…

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Q: 5. A hot air balloon is 2375 m above ground the and rising at a steady rate of 2.75 m/s. A sandbag…

A: Height of air balloon (h) = 2375 m Ascending speed of balloon (v) = 2.75 msTherefore, the initial…

Q: 4. A cat is resting on a lawn 25.7 m from a fence with a hole it in. A rabbit, hopping at a constant…

A: Distance of cat from the fence (d) = 25.7 m Constant velocity of rabbit (v) = 8.7 msAcceleration of…

Q: 1. A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed…

A: The friend is moving at a constant velocity of 4 m/s.So, after 3 seconds,x2 = u2 × t1x2 = 4 × 3x2 =…

Q: A particle moves along a straight line with a velocity v = 12 – 3t2 m/s, where t is in seconds. When…

A: We are given with velocity of the particle. We know velocity is nothing but time derivative of…

Q: 77. The position of a particle moving along x-axis varies with time as x = R- 5t + 6, where x is in…

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Q: 13. A lumpfish is thrown straight up into the air and passes a squirrel perched on a tree 4.0…

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Q: 3. An engineer is designing the runway for an airport. Of the planes that will use the airport, the…

A: Given : a = 3 m/s2 v = 65 m/s Unknown : Minimum allowed length

Q: 1.A ball is thrown into the air with an initial x velocity of 15 m/s and an initial y velocity 10…

A: The ball undergoes projectile motion as shown in the figure below: Here, initial x velocity,…

Q: 2. A penny is dropped from rest from the top of the Sears Tower in Chicago. Considering the height…

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Q: A Boeing 747 "Jumbo Jet" has a length of 64.5 m. The runway on which the plane lands intersects…

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Q: Wile E. Coyote is chasing the roadrunner and falls off a cliff. It takes Wile E Coyote 7 long…

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Q: Nerve impulses in a human body travel at a speed of about 100 m/s. Suppose a woman accidentally…

A: Given data: Speed (v) = 100 m/s Height of the woman or distance between foot and brain d = 1.80 m…