A 4000-kg car is headed toward a brick wall at a speed of 25 m/s. A force stops the car within a space of 4 m.    Find the acceleration of the car while stopping . What is the force (in newtons ) of the push against the car? What is the forward force on the car while stopping ?

Q: A 63.0-kg sprinter starts a race with an acceleration of 4.20 m/s2 . What is the net external force…

A: Given: The mass of the sprinter is 63.0 kg. The acceleration of the sprinter is 4.20 m/s2.…

Q: The weight of a body is 160 N. What is it's mass? Given g = 10 m/s²

A: Given in question: Weight of body(W) = 160 N                                  Gravitational…

Q: A child’s model boat, when placed in a creek, accelerates from rest at 1.4 m/s2. If the river is…

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Q: A net force acting on a 12.4 kg box produces an acceleration of 1.89 m/s2. What acceleration will…

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Q: A net force of 6.0 N causes an object to accelerate at 1.0 m/s2. What force will give this object an…

A: According to Newton’s second law, Substitute the values of force and acceleration to find the mass.

Q: Spongebob and Patrick are driving their car that has a mass of 1550 kg. They are driving at a…

A: Write the first kinematic equation and susbtitute the corresponding values to calculate the…

Q: A 63.0-kg sprinter starts a race with an acceleration of 4.20 m/s. What is the net external force on…

A: Given:- Mass=63 Kg To find:- Net force on the body

Q: A 63.0-kg sprinter starts a race with an acceleration of 4.20 m/s2. What is the net external force…

A: Given values, Mass of sprinter, m=63 Kg Acceleration, a=4.20 m/s2

Q: A horizontal force of 25 N is required to push a wagon across a sidewalk at a constant speed. What…

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Q: Pulling up on a rope, you lift a 9.42-kg bucket of water from a well with an acceleration of 2.20…

A: Mass of bucket (m) = 9.42 kg Acceleration of the bucket in upwards direction (a) = 2.20 ms2

Q: You lift a 7.27-kg bucket of water from a well by pulling on a rope.  You give the bucket an…

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Q: A 44 kg box is moving at a constant acceleration of 1.8 m/s2. What is the force acting on the box?

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Q: What is the bullets acceleration?

A: Given:- The force on the bullet = 3.9 N  The mass of the bullet is m = 6.2 g = 6.2 x 10-3 kg  Find:-…

Q: Imagine you work on a garden store during the summer. If you lift a bag of fertilizer with a force…

A: Force is defined as the product of mass and acceleration of the object. F = m*a…

Q: A 200-kg object accelerates at 15 m/s2. What is the force applied to the object?

A: Given data The mass of the object is given as m = 200 kg. The acceleration is given as a = 15 m/s2.…

Q: Two forces are applied to a 12 kg cart on a rough surface as shown. At a certain instant, force A is…

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Q: A stone is pushed with a horizontal force of 1.0 N and accelerates horizontally at a rate of 0.5…

A: Horizontal force of the stone is given as, FH = 1.0 N The acceleration of the stone is calculated…

Q: A force of 39 N accelerates a 3.0 kg block at 4.2 m/s7 along a horizontal surface. What is the…

A: Given data:  Force applied (F) = 39 N Mass (m) = 3.0 kg Acceleration (a) = 4.2 m/s2 Required: The…

Q: A 1000.0 kg car accelerates uniformly to double its speed from 13.7 m/s in 4.76 s. What net force…

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Q: While moving, a 50 kg box is pulled at a constant speed. The person pulls the 200 N force. There is…

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Q: A force of 2.10 N Is exerted on a 6.70 g rifle bullets. What is the bullets acceleration? (write…

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Q: A 50 Kg toolbox is being push along the floor by a 100 N horizontal force. Friction between the…

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Q: 2100 kg truck has put its front bumper against the rear bumper of a 2400 kg SUV to give it a push.…

A: According to Newton's second law F = ma

Q: A 1000.0 kg car accelerates uniformly to double its speed from 13.7 m/s in 4.76 s. What net force…

A: Given data: Mass of the car m =1000.0 kg speed, u =13.7 m/s Time t =4.76 s

Q: A force of 3.3 N is exerted on a 7.9 g rifle bullet. What is the bullets acceleration?

A: From Newton’s second law of motion.

Q: Starting from rest, Susan pushes a 20 kg box of Christmas decorations with a constant 24 N force…

A: Write the given values with suitable variables. P=24 NF=20 Nm=20 kgt=5 su=0 Here, P denotes the…

Q: A net force of 2400 N acts on an African female elephant with a mass of 3600 kg. What is the…

A: Force , F = 2400 N Mass , m = 3600 kg To find = acceleration

Q: A box whose mass is 90.7 kg is sitting on a flat, frictionless surface. I pull sideways on the box.…

A: Given: The mass of the box is 90.7 kg. The acceleration of the box is 8.4 m/s2. The surface is…

Q: A 1000-kg car accelerates to the right from 0 to 30 m/sec in 10 sec. There is a friction force of…

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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!