What is the net force acting on a car cruising at a constant velocity of 70 km/h (a) on a level road and (b) on an uphill road?

Q: Some of the top drag racers in the world are able to reach speeds of 530 km/h over a distance of…

A:

Q: A 5-kN bear slides down an ice slide without friction. If the slide makes an angle of 37° with the…

A:

Q: Calculate the maximum allowable force that can be applied to stop a 1000 kg vehicle if the maximum…

A: Given:Mass, m = 1000 kgMaximum allowable acceleration, a = 2.5g = 2.5 x 9.8 = 24.5 m/s2.

Q: If the action and reaction forces are always equal in magnitude and opposite in direction to each…

A: Newton's third law of motion states that forces always exist in action and reaction pairs. According…

Q: Give the magnitude and direction of the net force acting on a) a drop of rain falling down with a…

A: Here given a drop of rain falling with a constant speed . We have to find the magnitude and…

Q: A rock is suspended from a string; and it accelerates upward. Which statement is true concerning the…

A: The net force is given by the Newton's second law.  Net force = mass x acceleration

Q: If a body is moving with constant velocity, does it mean that there is no force acting on it?

A: If a body is moving with constant velocity then it does not mean that there is no force acting on…

Q: In an emergency stop to avoid an accident, a shoulder-strap seatbelt holds a 58 passenger in place.…

A: The speed of the car in m/s is The change in velocity here is

Q: Most moving objects experience non- conservative forces, such as...(you can choose more than one…

A: Non conservative forces are dissipative forces. These forces take energy away from the system as the…

Q: Why must an object at rest have either no force or a minimum of two forces acting on it?

A: Explanation:   1. According to the newton1st law, If the body is in motion it always in motion or…

Q: When the sum of the forces acting on an object is zero, its force acts on the object, it However,…

A: we know that . force is a vector quantity . and we have need resultant force on a object to define…

Q: A horizontal force of 120 N is needed to initially move a 50-kg container from rest. A constant…

A: Given data:  Initially force needed to move the container = 120 N Mass of container (m) = 50 kg…

Q: An elevator, moving upward, decreases in speed from 8.20 m/s to 1.99 m/s in 2.03 s. Assuming…

A: Given values, Initial velocity of elevator, u=8.20 m/s Final velocity of elevator, v=1.99 m/s time,…

Q: Does it matter which force we call the action and which force we call the reaction?…

A: According to Newton's third law of motion, Whenever two bodies interact with each other, the force…

Q: An object is in free fall if the only force acting on it is gravity. True False

A: A free fall is defined as the motion of an object which is only under the force of gravity and no…

Q: a 1000 kg car is traveling down a 25 degree slope. at the instant the speed is 13 m/s,the driver…

A:

Q: What acceleration does a baseball of mass 0.27 experience when hit by a bat if 180 N are exerted by…

A: Given  Mass = 0.27 kg Force When a baseball  hit by a bat(F) =180N We know that…

Q: Unbalanced forces that are not equal in size can cause an object to - O Stop moving O Change…

A:

Q: An object moves with unchanging speed in a straight line. Does it then have no forces acting on it

A: Given Object is moving at constant speed in a straight line

Q: an object with a mass of 5.0 kg accelerates 8.0 m/s^2 when an unknown force is applied to it. what…

A: From Newton 2nd law we know,  Force(F) = mass(m) × acceleration(a)

Q: Support force exerted upon an object that is in contact with another object * O Compression Normal…

A: A force acting perpendicular to contact surfaces when two objects touch each other is called normal…

Q: A force of 300N acts on a body of mass 150kg calculate the acceleration of body using D alemberts…

A:

Q: An object of mass 20.0 kg is falling in air and experiences a force due to air resistance of 40.0…

A: Given data: The mass of the object, m=20.0 kg. The resistive force exerted by the air on the…

Q: A boat moving with a velocity of 10m/s, towards west is acted upon by a pair of balanced forces.…

A: Velocity of boat (v) = 10 m/s due west Let the pair of balanced forces acting on the boat are F and…

Q: The mass of a subway car and passenger is 40,000 kg. If its acceleration as it leaves a station is…

A: Mass M = 40,000 kg Acceleration a = 0.9 m/s2

Q: A net force is acting on a body; therefore the body is a) being accelerated  b) losing mass c)…

A: According to Newton's 2nd law, acceleration of a body is equal to net force divided by mass. Hence…

Q: If the mass of the book is 50 Kg sliding with acceleration 1.2 m/s? then the friction force is O 364…

A:

Q: A body of mass 5 kg accelerates from 12 m/s to 20 m/s in 4 seconds due to the application of a force…

A: Given: The mass of the body is m=5 kg. The initial velocity is u=12 m/s. The final velocity is v=20…

Q: A 3.5 kg bucket of water is raised from a well by a rope . If the upward acceleration of the bucket…

A:

Q: On a cold winter day, a car tries to get moving on an icy road but does not get anywhere. What…

A: On a cold winter day, a car tries to get moving on an icy road but does not get anywhere.    Concept…

Q: 24.5 kg o workers push in opposite directions on a box that weighs exerts a force of 77.6 N and the…

A: GivenTwo workers push in opposite directions on a box that weighs 24.5 kg

Q: Static friction force is direct proportional to O pushing force O Pulling force O gravitational…

A:

Q: If an object is moving, is it possible for the net force acting on it to be zero?

A: According to Newton's second law, when a force applied to a system of mass M, it will accelerate.…

Q: Suppose that the acceleration of an object is zero.  Does this mean that there are no forces acting…

A:

Q: For the same applied force, if you doubled the mass of a particle its acceleration will be;   a.…

A: According to Newton second lawF=maWhereF=Force on object m=mass of objecta=acceleration of object

Q: If the net force on an object is zero,

A: The net force on an object is zero

Q: Is it possible for an object to be moving in one direction while the net force acting on it is in…

A: The constant velocity bodies do not have any net force on it.

Q: If an object is NOT accelerating, then the forces acting on the object are?

A: Given data The acceleration is a=0   The net force on the object is, Fnet=ma=m0=0 Here m is mass of…

Q: If I were to push a cart in the grocery store, which force would I be supplying to the cart? Would…

A: To push a cart in the grocery store the forces supplying to the cart will be Applied external force…

Q: Second Law of Newton states that when there is a net force acting on a body, the body would…

A: Given Second Law of Newton states that when there is a net force acting on a body, the body would…

Q: Which of the following is a pulling force from a rope or a string on an object? tension…

A: Given: A pulling force from a rope or a string on an object To Find: What do we call that pulling…

Q: A constant net force acts on an object. The object moves with Select one: a. constant speed O b.…

A: Constant net force is exerted on the object.

Q: A force of 50 newtons is exerted by a bat on a baseball. The force exerted by the baseball on the…

A:

Q: Shown below is a 10.0-kg block being pushed by a horizontal force F → of magnitude 200.0 N. The…

A: Along the incline net force is Fnet=Fcosθ-mgsinθ-f Here F is applied force, m is the mass of the…

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!