A mischievous 1.1-meter boy stands on a bridge somewhere to drop a stone to passing cars. The height of the bridge is 6.2 meters and the distance between his head and shoulder is 10.0 inches. He drops the stone with his arm positioned horizontal to his shoulder while the car was 7.1 meters away. What must have been the velocity of the car if the stone hit it with a perfect timing?

Q: If an object initially at rest is given a velocity of: vx =-1.93 m/s and vy = 2.51 m/s. What is the…

A:

Q: Two stones are separated by a vertical distance y (in meters) from each other. One stone is thrown…

A: We are given 2 stones separated by some vertical height. We are given initial velocities of both the…

Q: A student throws a set of keys vertically upward to her sorority sister, who is in a window 2.90 m…

A:

Q: You attach a meter stick to an oak tree, such that the top of the meter stick is 2.87 meters above…

A:

Q: Two particles move along an x axis. The position of particle 1 is given by x = 6.002² +3.00 +2.00…

A: Position of particle 1 is,The velocity of particle 1 is,The velocity of particle 1 is, calculated

Q: A ball is moving towards you at a velocity of 15 m/s [E]. You kick it, and the ball leaves foot with…

A: Given:-  A ball is moving towards you at a velocity of 15 m/s [E]. the ball leaves the foot with a…

Q: A flowerpot falls off a windowsill and falls past the window below. You may ignore air resistance.…

A:

Q: Please Answer all the Questions Use the following constants if necessary. Coulomb constant,…

A: I have answered first 3 subparts of the question. If you need answers of other subparts (d, e and f…

Q: A projectile is fired from the top of a ridge and its height is given by the equation s(t) =-16t2…

A: Height equation is given S(t)= -16t²+70t+5 We have to find the time interval for which the…

Q: One rock is thrown upward with a speed of 8:0m=s from the ground while another rock is dropped…

A: The two rocks are thrown simultaneously towards each other, one from the ground upwards and the…

Q: A pen is dropped vertically 6 ft above the ground, 1 second later, someone grab the pen before the…

A:

Q: What is the initial speed of the mouse in meters per second?

A: Concept: A push or pull upon an object resulting from the objects interaction with another object is…

Q: Vector u = <-7,3,-5> and vector v = <-1,1,0>. Find the cross product of u X v.

A:

Q: Two cars are moving towards an intersection. One car is 150 meters north of the intersection and…

A:

Q: Mike at um = 15 km/h. The moment they start, a fly also starts from Josh towards Mike and after…

A: The displacement is calculated by taking the integral of velocity function , that is ,   Let the…

Q: A ball dropped from rest is traveling 13.0m/s after 0.5s. (a) How far would this ball fall in 15s…

A:

Q: The velocity of a particle is given by v = 23t2 - 110t + 52, where v is in meters per second and t…

A: Given data: Velocity of particle, v=23t2-110t+52

Q: A particle travels along a straight-line path (y 1.7 x). If the x component of the particles…

A:

Q: A mountain climber stands at the top of a 57.3 m cliff hanging over a calm pool of water. The…

A:

Q: Two stones are separated by a vertical distance y (in meters) from each other. One stone is thrown…

A: GivenDistance between two stones = y m V01 (Initial velocity of first stone ) = -35 m/sV02 ( initial…

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

A: We have given that, the time taken by rocket to cover window's height is t =0.15 s. The distance…

Q: On a spacecraft, two engines are turned on for 832 s at a moment when the velocity of the craft has…

A: Given The time up to which the engine turned on is t=832 s. The x component of velocity is v0x =…

Q: hovercraft is initially at rest but floating above land. The hovercraft has two horizontal…

A:

Q: The position of a particle changes from r1= (1.07cm)i+(4.87cm)j to r2=(-4.22cm)i+(4.87cm)j. What is…

A:

Q: Two friends are throwing basketballs from the main floor of a theatre to the balcony. One person…

A:

Q: The diagram represents a time-lapse video of a person throwing a basketball into the air. A camera…

A:

Q: A person on the top of a roof of a building (100 m) drops a ball. After 2s passed, a person who…

A: Given: The height of the building is 100 m. The person on the ground throws another ball after 2 s…

Q: A student throws a set of keys vertically upward to his fraternity brother, who is in a window 3.60…

A:

Q: A helicopter is ascending vertically with a speed of 5.21 m/sm/s . At a height of 102 mm above the…

A:

Q: A cannonball is fired at 175 (m/s), straight up in the air, by accident. Quickly realizing the…

A: Initial velocity of each cannonball (u) = 175 m/s Height at which the collision must take place (h)…

Q: A male volleyball player performs a jump serve and hits the ball 2 meters right above the end line.…

A:

Q: A soccer player kicks a rock horizontally off a 32 m high cliff into a pool of water. If the player…

A:

Q: Henrietta is going off to her physics class, jogging down the sidewalk at a speed of 3.45 m/s. Her…

A: The speed of Henrietta, u=3.45 m/s.The height of the window is h=36.4 m.The time after which the…

Q: An object's position as a function of time in one dimension is given by the expression; 3.89t2 +…

A:

Q: A gannet is a seabird that fishes by diving from a great height. If a gannet hits the water at 32…

A: We have to determine the gannet's dive. We know that a gannet hits the water at 32 m/s.

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 –