Speed of a body is never negative. Why?

Q: The acceleration of freely falling bodies is known as

A: The acceleration of freely falling bodies is known as acceleration due to gravity.

Q: An apple weighing 5.25 N falls from a tree. The magnitude of the force of gravity exerted on the…

A: Given that, the magnitude of the force of gravity exerted on the falling apple by the Earth is 5.25…

Q: Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when…

A: As the driver applies brakes, the bus comes to rest. But, the passenger tries to maintain the…

Q: Gravitational force: This force acts between any two bodies due to their O mass O velocity O…

A: SOlution: what factor represent the Gravitational force between masses.

Q: If you apply the same amount of force to a bowling ball and a golf ball the golf ball moves faster…

A: Answer is inertia . Momentum is directly dependent on mass and velocity of the object Changes in…

Q: Which has the greatest inertia? O 2.7 kg of iron fillings O 2 kg of gravel O 3 kg of cotton candy O…

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Q: She is standing on a spring scale in an elevator that is traveling downward, but slowing up. a) The…

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Q: A parachute descends slowly. Why?

A: When any object falls from a height, gravity acts on it, which pulled it downwards, but the air…

Q: According to Newton's first law of motion, a moving object that is not acted on by an unbalanced…

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Q: when a car brakes hard, _ is moving backward.  1. the driver inside the car 2. nothing 3. the car…

A: Given:- when a car brakes hard what is moving backward.

Q: A block is supported by a string. When is the tension in the string equal to the weight of the…

A: A block is supported by a string.we have to find when is the tension in the string equal to the…

Q: School bus drivers are extra careful when they cross railroad tracks. They stop before they cross…

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Q: A man humping out of a moving train falls with his head forward. Why?

A: While a man is jumping out of the moving train the first body part that touches the ground is the…

Q: he normal force is... Always points straight up Is always equal to the force of gravity Always…

A: Ques: The normal force is... Always points straight up Is always equal to the force of gravity…

Q: You stay in an elevator that moves up with constant velocity. The magnitude of the normal force…

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Q: Raindrops can fall at different speeds; some fall quite quickly, others quite slowly. Why might this…

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Q: A ball on a cart is moving at a rate of 2 m/s. The cart suddenly stops and the ball continues to…

A: Solution:

Q: A person stands on a scale inside an elevator at rest. The scale reads 800 N. The elevator…

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Q: If you throw a ball upwards it will eventually slow down and fall,why is that so?

A: If we thrown an object in space, it will keep moving far forever and never return, because there is…

Q: < You push against the floor when you walk and the floor pushes back on you. An object will not…

A: An object will not accelerate unless a net force is applied to it ------&gt; it is the direct…

Q: You hit a wall with a stick. The equal but opposite reaction is O the wall pushes against you O you…

A: Using Newton's 3rd law of motion to solve the problem

Q: A body at rest or in uniform motion is one that undergoes acceleration O is in equilibrium O is…

A:

Q: •A person holds a bucket of water at rest with a rope. After getting tired the person then ties the…

A: Ehen he tied the rope with the bucket than tension is equal to the weight of the bucket full of…

Q: As cars travel, oil and gasoline leaks onto the road surface. If a light rain falls, what does this…

A: As car travels, oil and gasoline leaks onto the road surface, on light raining the gasoline…

Q: Two masses,m1 and m2 , are connected to each other as shown. Mass m1 slides without friction on the…

A: Given quantities: Two masses : m1 and m2 acceleration due to gravity = g acceleration of the masses…

Q: 16. An engine rated at 5.0 × 104 watts exerts a constant force of 2.5 x 103 newtons on a vehicle.…

A: As per Bartleby guidelines I am answering only the first question(question 16).

Q: Two identical cars collide head on. Each car is traveling at 100 km/h. The impact force on each car…

A: Since the two cars are moving with the same velocity in opposite direction and have the same mass,…

Q: A horizontal force of 12 N pushes a 0.50-kg book against a vertical wall. The book is initially at…

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Q: When you jump off a step you usually bend your knees as you reach the ground. By doing this, the…

A: Given  Knees are bent to increase the time of impact is about 10 times.

Q: If you walk along a log floating on a lake, why does the log move in the opposite direction?

A: Solution: Newton’s third law says that each action always reacts in an equal and opposite direction…

Q: Two objects, A and B, are released from rest in free space (no other masses are near). Object A has…

A: The force exerted by object A on B. FAB=GmAmBrAB2 The force exerted by object B on A. FBA=GmBmArBA2…

Q: A person is in an elevator that moving upward at a constant velocity. The weight of the person is…

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Q: A boat moves at a speed of 20 m / s when the water is at rest. The boat needs to make a round trip…

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Q: A body has a mass of 50 kg. Its velocity is brought down from 20 m/s to 5 m/s by a resisting force…

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Q: An object cannot remain at rest unless

A: Given statement is  An object cannot remain at rest unless

Q: What happens when a force is subjected to an object?

A: According to Newton's second law of motion when momentum of a body is changed with respect to time…

Q: Two children float motionlessly in a space station. The20-kg girl pushes on the 40-kg boy and he…

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Q: football player runs without his knee and thigh pads. Discuss what will happen to him if he…

A: When any object fall on ground with some speed has some initial momentum after falling on the ground…

Q: Was it easier to push a fist into the bag with no water or into the bag with water?

A: Answer We can move easily through air than through water. If the road is full of water we can't…

Q: A passenger is standing on a scale in an elevator. The building has a height of 500 feet, the…

A: Draw the free-body diagram of the passenger with scale when the elevator is accelerating downward…

Q: If a person standing near a moving train, there is a danger that he will fall towards it. Explain.

A: If a person standing near a moving train, there is a danger that he will fall towards it because

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!