What force does a trampoline have to apply to Jennifer, a 45.0-kg gymnast, to accelerate her straight up at 7.50 m/s² ? The answer is independent of the velocity of the gymnast-she can be moving up or down or can be instantly stationary.

Q: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air…

A: The forces on the ball along the vertical direction will be :The force exerted by the pitcher, F…

Q: A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun…

A: Force is defined as the product of mass and acceleration. Acceleration is defined as the rate of…

Q: An 8.7 kg block slides with initials speed of 1.66 m/s across a level floor. How far does the block…

A: The equation of motion is given by,

Q: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air…

A: Use the equation of motion to solve for the acceleration of the ball.

Q: A projectile of mass m = 1.5 kg is fired from the origin under an angle 0 = 45° with the horizontal,…

A:

Q: The 0.8-kg particle slides across a frictionless horizontal plane. The force P applied to the…

A: given,  mass, m=0.8kg velocity of particle at t=0 is 3mps from the graph show above,  from 0 to 2s…

Q: The small mass m 1.4 kg and big mass M= 9.5 kg are initially at rest with the small mass at the top…

A: From conservation of momentum:

Q: An experimental rail car with a rocket mounted on it is free to slide on a rail that is so slippery…

A: Since the question  contains more than three sub parts, solution for the first three is provided…

Q: Two penguins, Wheezy and Mumble, are racing down an icy slope into the water below.  Wheezy has a…

A: The coefficient of friction μ=0.12 The angle of inclination θ=80 The free body diagram of the…

Q: The force acting on a skater of mass 73.4 kg is attenuated with her speed v as F=-1.23*v2, where v…

A: Given that: Mass of skater, m=73.4 kgF=-1.23 v2Initial speed, vi=4.06 m/sInitial speed, vf=2.24…

Q: The high-speed winds around a tornado can drive projectiles into trees, building walls, and even…

A: Given:  m = 0.13 g = 0.13 x 10-3 kg u = 220 m/s  v = 0 m/s  d = 15 mm = 0.015 m

Q: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air…

A: Step 1It is given that

Q: The average thrust created by the first stage engine of a model rocket is 50N. The rocket has an…

A:

Q: Gibbons, small Asian apes, move by brachiation, swinging below a handhold to move forward to the…

A:

Q: A car of mass 1.2  103 kg is traveling east at a speed of 24 m/s along a horizontal roadway. When…

A: Given: Mass of car is M=1.2×103kg The initial speed of the car is Vinitial=24m/s brakes are applied…

Q: During an Olympic 100-m sprint race, Usain Bolt, the world record holder in that race, quickly…

A: Given: Mass,m=94kgAcceleration due to gravity,g=9.8m/s2Contact Force,FC=2.8×103N a) The expression…

Q: A 2110 kg car traveling at 8.4 m/s collides with a 2730kg car that is initially at rest at the…

A: Mass of first car = m = 2110 kg Mass of second car = M = 2730 kg Distance traveled = s = 3.3 m…

Q: A teenager is pushing a cart.  There is no friction between the cart and the ground. Mass of the…

A: 1. First, determine the cart’s constant acceleration (a) during the given time due to the force (F)…

Q: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air…

A: Given,

Q: A 79.3 kg bungee jumper is initially standing at a rest on a bridge. After falling a distance 19.6…

A: Given: The mass of the jumper is 79.3 kg. The person falls a distance of 19.6 m. The force of the…

Q: Leilani loads luggage into a Hawaiian Air passenger plane bound for Vegas using a conveyor belt…

A: Angle of inclination of the conveyer belt (θ)=20o Time take by the luggage to reach the top (t)=0.70…

Q: The three blocks shown are identical. Blocks B and C are at rest when block B is hit by block A,…

A: The given situation is depicted in the following figure. According to the question, Before…

Q: 18.710 7. An airplane of mass 1.5x104 kg moves horizontally at a speed of 60.0 m/s. The pilot then…

A:

Q: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air…

A: Given,

Q: Review Conceptual Example 16 as background for this problem. The water skier there has a mass of…

A:

Q: A teenager is pushing a cart.  There is no friction between the cart and the ground. Mass of the…

A: Given: No friction between the cart and the ground Mass of cart Mc=120kg Initial velocity Vi =0 Cart…

Q: A ball of mass m is shot straight up into the air with an initial speed Vị.

A:

Q: A 0.087 kg arrow is fired horizontally. The bowstring exerts an average force of 80 N on the arrow…

A: Given data: Mass of arrow (m) = 0.087 kg Average force (F) = 80 N Distance (d) = 0.90 m Speed of…

Q: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air…

A:

Q: A particle with mass 0.9 kg is pulled vertical upwards from rest by means of a cord with an…

A:

Q: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air…

A: Given,

Q: A hockey puck (mass = 4 kg) leaves the players stick with a speed of 12 m/s and slides on the ice…

A: Deceleration  a = 0.3 × 9.8 =   2.94 m/s².

Q: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air…

A: Ball’s acceleration is,

Q: A 1.90 kg box is moving to the right with speed 9.00 m/s on a horizontal, frictionless surface. At t…

A:

Q: Consider a tennis ball of mass 0.040 kg making contact with a racquet at 23.7 m/s for 1.30 ms. If…

A:

Q: The high-speed winds around a tornado can drive projectiles into trees, building walls, and even…

A: The decrease in kinetic energy of the toothpick is equal to work done by the toothpick in overcoming…