Sandy and Chris stand on the edge of a cliff and throw identical mass rocks at the same speed. Sandy throws her rock horizontally while Chris throws his upward at an angle of 45° to the horizontal. Are the rocks moving at the same speed when they hit the ground, or is one moving faster than the other? If one is moving faster, which one? Explain.

Q: When a 0.050 kg golf ball takes off after being hit, its speed is 42 m/s. a) What is the change in…

A:

Q: The car's mass is 923 kg. The trampoline just keeps the car off the ground. Calculate the kinetic…

A:

Q: A bullet of mass 20g is found to pass two points 30m apart in a time interval of 4s. Calculate the…

A: c

Q: Which of the following bodies has the largest kinetic energy? Select one: a. Mass 2M and speed 3V b.…

A:

Q: A toy rocket launcher contains a spring with a spring constant of 35 N.m. a). How far must the…

A:

Q: A golf ball of mass 50 grams is struck and has a velocity of 70 m/s when it leaves the tee.  The…

A: Given, mass of golf, m = 50g = 0.05 kgvelocity whent it leaves the tee , v = 70 m/stime taken to…

Q: 7. If a closed system has 500 J of energy right now, how much will it have in five minutes?

A: According to guideline we need to solve only first question If a closed system has 500 J of energy…

Q: A player from the red team is skating across the ice when he collides with a player from the blue…

A: We need to draw the S/R energy diagram for interaction 3 : collision between two players. Given…

Q: Assume two small balls ball A and ball B. If A has double mass and triple kinetic energy of ball B,…

A:

Q: The physical unit of kinetic energy is: - Kg-cm2/s2 - Gm/s2 -Gm-cm/s2. - None of the above

A:

Q: Dr. Evil has a tank of sharks with frickin' laser beams attached to their heads! His henchmen throw…

A:

Q: You throw a ball on a wall and the ball hits the wall and bounces off. You decide to throw a piece…

A: Given Ball thrown at wall bounces off. A piece of clay thrown at wall sticks to it and stops moving.…

Q: 4. Two astronauts with masses mj and m2 are moving with the velocity u together. They push each…

A:

Q: Two objects A and B have the same kinetic energy. Object A with massm is initially moving with speed…

A: Mass of A is m Mass of B is m/2 Speed of A is vi Suppose that speed of B is vB

Q: e by side, two round objects are released from the top building, object 1 is released from rest,…

A: Given:-  Let the two objects 1 is  A and objects 2 is B then given  uA=0 , vA=4 m/s vB=3 m/s  Find:-…

Q: Which of the following are true about the relationship between momentum end energy? Momentum is a…

A: 1. Momentum is not a form of energy. So the given statement is false.

Q: How fast (in meters per second) must an iron ball with a mass of 42.2 g be traveling in order to…

A: Given,Mass of the iron ball, m = 42.2 gKinetic energy of the ball, KE = 12.49 J

Q: A father racing his son has 1/4 the kinetic energy of the son, who has 1/3 the mass of the father.…

A:

Q: Three objects with the same speed v are about ollide and stick together as shown to the right. If…

A: In all collision momentum remains conserved.

Q: A hammer has a mass of 2.0kg and is moving horizontally at a speed of 6.0 m/s when it strikes a…

A: Mass of the hammer, m=2.0 kg Speed of the hammer, v=6.0 m/s. Upon hitting the nail drives 2 cm…

Q: an empty freight car with a mass of 1000 kg rolls at 5 m/s along a level track collides with a…

A: Collisions are of two types , they are elastic and inelastic collisions . Elastic collisions are…

Q: A bicycle has a momentum of 15 kg•m/s. What momentum would the bicycle have if it had double the…

A:

Q: A 50g ball of clay traveling at speed V(sub 0) hits and sticks to a 1.0 kg brick sitting at rest on…

A:

Q: Use G = 6.674 × 10-¹1 N m²/kg² to answer below questions. a. Evaluate the gravitational potential…

A: We have given the value of G1. We have to find the the gravitational potential energy between two…

Q: A rocket is propelled forward as very high speed gases are ejected out of its back. Which one of the…

A: According to conservation of momentum If no external force acts on the system its momentum remains…

Q: You are driving 2018 Honda Civic and are stuck behind 2018 Toyota Tundra. a) What is the increase in…

A: Known value: Mass of 2018 honda civic is m = 1247 kg Given: Initial speed is u = 5 m/s Final speed…

Q: n object with a mass of 6-kg has a velocity of v=(-i+4j) m/s.  What is the kinetic energy of the…

A: Given mass of an object m = 6 kg velocity of an object v→ = (-i +4j ) m/s To Find  Kinetic energy of…

Q: A small spaceship whose mass is 2200 kg (including an astronaut) is drifting in outer space with…

A:

Q: kinetic energy

A:

Q: 5. h After: 30⁰ Before: 2 2 m₁ = 2 kg m₂ = 3kg h = 50 cm Mass 1 is released from rest from height…

A: The following problem utilizes the concepts of conservation of energy and the law of conservation of…

Q: the kinetic energy of a particle of mass 50 moving with velocity 2/3 i +1/3j + 2/3 k is 25 .II O 75…

A: Given data: Mass, m=50 kg Velocity, v=23i+13j+23k We have to find the kinetic energy of the…

Q: Q7. Which would have greater impact; a ball with mass m thrown with speed 20 mis or a ball with mass…

A: The ball with greater kinetic energy will have a greater impact. The kinetic energy of a mass m…

Q: Ronaldo is playing outside and shoots a ball of mass 2 kg horizontally with a speed of 8.0 m/s…

A: velocity of the cart after the ball strikes it = (-1/17) m/sInitial kinetic energy of the system =…

Q: It is generally a good idea to gain an understanding of the "size" of units. Consider the objects…

A:

Q: 16. A 20 000-kg meteorite from outer space is headed directly toward Earth with a speed of 3.0 km/s.…

A: The mass of the meteorite, m=20000 kg The speed of the meteorite, vi=3km/s The distance above the…

Q: Three identical balls are thrown from the edge of a cliff, each with the same initial speed. Ball 1…

A: The initial height of all balls is the same. The initial velocity of all balls is the same.