A cargo helicopter, descending steadily at a speed of 3.9 m/s, releases a small package. Let upward be the positive direction for this problem. (a) If the package is 26 m above the ground when it is dropped, how long (in s) does it take for the package to reach the ground

Q: Hobbyists build a compressed air powered cannon which is able to launch a pumpkin a horizontal…

A: Step 1 given data

Q: A skydiver jumps out of a helicopter and falls freely for 6.0 s before opening the parachute. (a)…

A:

Q: A package containing emergency medical supplies is dropped by a Red Cross helicopter in a remote…

A: The three kinematic equations of motion are

Q: A daredevil is attempting to jump his motorcycle over a line of buses parked end to end by driving…

A:

Q: A ball is thrown vertically upward with a speed of 30.0 m/s.(a) How high does it rise?(b) How long…

A:

Q: A ball is thrown upward at 4.6 m/s, from a height of 20 m above the ground.  How fast (m/s) does…

A: Given data:  Initial velocity = 4.6 m/s, upward Height = 20 m Required: Velocity of ball when hit…

Q: A ball is thrown upward from the ground with  initial velocity vi= 14 m/s and reaches height of h…

A: Initial velocity of the ball (vi)=14 m/s Acceleration due to gravity (g)=9.8 m/s2

Q: A hoodlum throws a stone vertically downward with an initial speed of 18.0 m/s from the roof of a…

A:

Q: A person stands at the edge of a deck that is 40.0 m above the ground and throws a rock straight up…

A:

Q: A toy rocket moving vertically upward passes by a 1.8 m -high window whose sill is 7.0 m above the…

A:

Q: Raindrops fall to Earth from a cloud of 1700m above the Earth's surface. If they were not slowed by…

A: Given ,       distance between cloud and the earth = 1700m

Q: A cannon is fired with an initial horizontal velocity of 20 m/s and initial vertical velocity of 25…

A: Given data: The initial horizontal velocity,ux=20 m/s The initial vertical velocity, uy=25 m/s The…

Q: A hoodlum throws a stone vertically downward with an initial speed of 14.0 m/s from the roof of a…

A:

Q: The DR Horton Tower in Fort Worth is 400 m tall. Joe wants to set the world’s stair climbing record…

A: The expression from kinematics,

Q: A rock is thrown down into the well with an initial downward speed 3.6of m/s. The rock hits the…

A: Let the initial speed of the rock is denotes by u and the time taken to hit the bottom is t. The boy…

Q: A ball is thrown vertically upwards from the side of a bridge with a velocity of 11 m/sec.  On the…

A: Given,

Q: divers of Acapulco push off horizontally from rock platforms about hhh = 31 mm above the water, but…

A: Motion of projectile can be divided into x component and y component

Q: A balloonist, riding in the basket of a hot air balloon that is rising vertically with a constant…

A:

Q: As soon as a ball was allowed to fall from rest from height h, a second ball was thrown upwards from…

A:

Q: To determine the height of a bridge above the water, a person drops a stone and measures the time…

A: height = h = 41 m initial velocity of stone = V = 0 m/s ( dropped ) time = t = ?

Q: A ball is thrown upward from roof top, 90 m above the ground. The ball rises, then falls and hits…

A: Given data *The given height of the roof is h = 90 m *The time taken by the ball to reach the ground…

Q: Crickets Chirpy and Milada jump from the top of a vertical cliff. Chirpy drops downward and reaches…

A:

Q: Suppose I throw a rock horizontally with an initial speed of 30 m/s. Suppose my release point is 2 m…

A:

Q: A person launches a rock with an initial speed of 200 m/s at an angle of 45 degrees above the…

A: When the rock is released, it will have two components to its velocity: Along the x– and y–axes, the…

Q: Suppose a chinook salmon needs to jump a waterfall that is 1.37 m high. (a) If the fish starts from…

A: Height of waterfall H=1.37 m The horizontal distance covered by the fish is sx=1.09 m The velocity…

Q: You decide to drop a water balloon on a friend as a horribly inconsiderate prank that they shall…

A: Given that:- Speed of bike=11.4m/s

Q: A small rock is thrown straight up from the edge of the roof of a building. Air resistance can be…

A: We are given the maximum height reached by rock above roof. We know that at top most point speed is…

Q: A man is trying to throw some keys to a woman on the fourth floor balcony, a height of 16.8 m above…

A:

Q: A helicopter is ascending vertically with a speed f 5.9 m/s. At a height of 99.0 m above the ground,…

A:

Q: A ball is thrown straight upward. At 7.04 m above its launch point, the ball's speed is 3.36 times…

A:

Q: A tennis ball is thrown vertically upward with an initial velocity of +9.3 m/s. a) What will the…

A: According to the given data u=9.3m/s vertically We need to find (a) Velocity of the ball when it…

Q: A rock is tossed from the top of a building at an angle of 35° above the horizontal with an initial…

A: Given information:Initial velocity of the rock (u) = 16 m/sAngle of the velocity (θ) = 350Time taken…

Q: A person stands at the edge of a deck that is 40.0 m above the ground and throws a rock straight up…

A: Given: height of deck, h = 40 m  maximum height of rock above deck, H = 15 m

Q: A ball is thrown down vertically with an initial speed of 20 m/s from a height of 60 m. Find (a) its…

A:

Q: A small mailbag is released from a helicopter that is descending steadily at 2.65 m/s. (a) After…

A: Given that, the speed of the helicopter is u=-2.65m/s a negative sign indicating that the speed is…

Q: A ball is thrown upward at time t=0 from the ground with an initial velocity of 14 m/s (~ 31 mph).…

A: At the greatest height, the velocity of ball will be zero.

Q: A marble is thrown upward with an initial speed of 15.6 m/s. Assume g=10.0 m/s2 and neglect air…

A: Given  Initial velocity u=15.6m/s Final velocity v=0.5×15.6=7.8 m/s Acceleration due to gravity…

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.