While jumping on a trampoline, sometimes you land on your back and other times on your feet. In which case can you reach a greater height and why?

Q: CAR A 1. Greater force is needed to stop car because it has higher inertia. 2. Bodies with higher…

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Q: To open a very heavy door, where is the best place to push the door?

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Q: A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of…

A: step-1     given that, m=0.38 kg       v1 = +2.30 m/s       v2 =-160 m/s      ∆t =3.5 ×10-3 s

Q: 1. A 10-kg rock and a 20-kg rock are thrown upward with the same initial velocity and experience no…

A: When a rock is thrown upwards with initial velocity v and no air resistance is present, then there…

Q: When a ball is tossed straight up,it momentarily comes to a stop at the top of its path. Is it in…

A: When the ball is tossed, the ball is under free fall after the ball leaves the hand.  Therefore, the…

Q: If you lower the window on a car while moving, an empty plastic bag can sometimes fly out the…

A: The Bernoulli’s principle for the constant depth is given as, Here, P is the pressure, v is the…

Q: A large piece of wood is at rest on a horizontal floor. The coefficient of kinetic friction between…

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Q: How can a person stuck in the middle of a frictionless frozen pond safely reach the edge of the…

A: Newton's third law states that for every action there is equal and opposite reaction

Q: You catch a ball within 1 millisecond from when the ball touches your hand. If the ball undergoes a…

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Q: A 3-g bullet is fired horizontally into a 10-kg block of wood suspended by a rope from the ceiling.…

A: Given data: The mass of the bullet is mb=3 g. The mass of the block is mbk=10 kg. The height of the…

Q: If, by some suitable mechanism, the falling body had been given an initial downward push instead of…

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Q: A girl throws a ball with a horizontal velocity of 2.4 m/s from the height of 0.90 m. If the…

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Q: You are with 20 other people on a boat at rest in frictionless water. The group's total mass is 1560…

A: Given that ---  total mass = 1560 kg boat's mass = 1.2×104 kg.  The entire party walks = 6.3 m…

Q: A 10.0 kg dog jumps up in the air to catch a ball. The dog's centre of mass is normally 0.2 mabove…

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Q: block of wood provided a decelerating force of -500 N to stop the penetration of a 0.005 kg spear…

A: Given:The deaccelerating force is -500 N. The mass of the spear is 0.005 kg. The initial velocity of…

Q: In which case would it be easier to lift a cement truck: on Earth's surfade or on the Moon's…

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Q: The applied momentum and the final momentum acquired: A. will never be the same B. will always be…

A: Sol. The applied momentum and the final momentum acquired by the body is same. If external force…

Q: a 60 kg object is moving at 20m/s when a force brings the object to rest in 0.050 seconds. of the…

A: Given, mass of the object (m) = 60 kg  Initial speed (u) = 20 m/s  Final speed (v) = 0 m/s  Time…

Q: A baseball is thrown vertically upward and feels no air resistance. As it is rising O its…

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Q: "A 4.0-kg mass is moving with speed 2.0 m/s. A 1.0-kg mass is moving with speed 4.0 m/s. Both…

A: Given, Given,m1 = 4.0 kg and v1 = 2.0 msm2 = 1.0 kg and v2 = 4.0 ms Both the object encounters the…

Q: A truck with a mass of 1490 kg and moving with a speed of 12.5 m/s rear-ends a 767 kg car stopped at…

A: According to conservation of momentum -  Initial momentum = Final momentum  Mathematically -…

Q: An ice skater(3), mass 20 kg, is sliding on ice (frictionless). Two other ice skaters (1,2) come out…

A: F1 = 5 N @20 degree below the horizontal F2 = 8N@60 degree above the horizontal

Q: A 4kg model rocket, initially at rest, accelerates upwards by generating a 74N thrust as it burns…

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Q: 2. A mass = m 4 kg falls from a height of 6.0 m and strikes a wedge of M = 20 kg on wheels. After…

A: Given that:- Mass of block=m=4kg Mass of wedge=M=20kg

Q: Adonai accidentally unholds a saucer that falls on the floor vertically. It splits into three parts…

A: According to the conservation of momentum, injitial momentum must be equal to the sum of momentum of…

Q: Which safety spring at the base would help in lessening the impact of a falling heavy body? The one…

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Q: A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of…

A: Given :-Mass of the ball=0.38 kg nVelocity of which the ball approaches the cushion=+2.50 m/s…

Q: A 75-kg swimmer dives horizontally off a 500-kg raft. If the diver's speed immediately after leaving…

A: given data as per question mass of swimmer =  75kg mass of raft  =   500kg diver speed after leaving…

Q: Why Is It Dangerous To Jump Out Of A Moving Bus?

A: The inertia of motion causes the passenger of a bus to fall down or temporarily lose his balance as…

Q: You are on a spacewalk with another astronaut. You throw a tool to them. Your mass is 82 kg, the…

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Q: When catching a foul ball at a baseball game, why is it important to extend your bare hands upward…

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Q: You are a pitcher in a baseball game and you want the ball to go upwards when you throw it to the…

A: rolling backward when thrown will make ball rise and vice versa

Q: To make an object start moving on a surface with friction, will it usually require more, less or the…

A: Newton's first law of motion states that everybody continues its state of rest or uniform motion…

Q: On roller blades you horizontally toss a ball away from you. The mass of the ball is one tenth your…

A: (given) Firstly, horizontally toss a ball away from a body. Mass of the ball is one tenth a mass of…

Q: A plane, flying horizontally, releases a firework with explodes before hitting the ground.…

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Q: A 4.0 kg sphere and 8.0 kg sphere are both dropped from the same height at the same time. If the two…

A: To determine: The correct option.

Q: A 4768-kg roller coaster train full of riders approaches the loading dock at a speed of 17.1 m/s. It…

A: Consider the retarding force be F, that is, applied against the motion of the roller coaster train.…

Q: A trailer truck enters a 2 percent uphill grade traveling at 66 km/h and reaches a speed of 108 km/h…

A: Given: Mass of cab(mcab)=1800 kgWeight of cab(Wcab)=17658 NMass of trailer(mtrailer)=5400 kgWeight…

Q: billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the…

A:

Q: A 10 kg mass, initially at rest, is dropped from a height of 15 meters above the horizontal.…

A: mass = 10 kg inital speed = 0 m/s2h = 15 m a)initial potential energy = mgh  = 10*9.8 * 15 = 1470 J…

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: