if a external force can change thew velocity in a body how can the iternal force of brakes bring a car to rest

Q: As you increase your push, will friction on the crate increase also?

A:

Q: Assuming the mass is the same, how does the acceleration of an object depend on the force exerted on…

A: in this question  we discussed  second  law of motion.

Q: When a force is applied to the more massive block, the net force on the block can be given as,

A:

Q: Check Your Understanding A force of 1150 N acts parallel to a ramp to push a 250-kg gun safe into a…

A: We need to determine the safe acceleration up the ramp. We know the mass is 250 kg, the operating…

Q: The motor of a speed boat is shut down when it has attained a speed of V, Now the boat is slowed…

A: As the force acting is regarding force, hence it will try to reduce the speed of the boat and…

Q: When an object falls freely under the influence of gravitythere is a net force mg exerted on it by…

A:

Q: When a skier skis down a hill, the normal force exerted onthe skier by the hill is(a) equal to the…

A: Free body diagram of the skier on the incline is

Q: (II) Figure 4–53 shows a block (mass ma) on a smooth hori- zontal surface, connected by a thin cord…

A:

Q: A two-car light rail travels at 45 mi / h. The weight of car A is 18 tons and that of car B is 13…

A: Constant deceleration means the body is in constant acceleration in the opposite direction of its…

Q: a boat moves through the water with two forces acting on it. one is 1875-N forward push by the water…

A: Given data:  Forward push Force (F) = 1875 N Resistive force (f) = 1200 N Mass (m) = 1100 kg Time…

Q: In which case would it be easier to lift a cement truck: on Earth's surfade or on the Moon's…

A:

Q: (II) (a) A box sits at rest on a rough 33° inclined plane.Draw the free-body diagram, showing all…

A:

Q: A body of mass 300g, initially at rest is acted upon by a force which causes it to a move distance…

A:

Q: Can forces exist solitary on one object without any interaction with other objects?

A: A force can act on a single object without an interaction between two objects.An example for the…

Q: A car of mass 1200kg travelling at 90km/h on a horizontal road is brought to rest in 3s by the…

A:

Q: is it possible for an object to ve moving, yet not experience force? is i possible get an object to…

A: Yes , it is possible for object to keep moving and yet not experience force. And yes it  is also…

Q: An object moves with constant velocity. Is it safe to conclude thatno force acts on the object? Why,…

A: Step 1 The expression for the force acting in an object is, Here m is mass of the object a is…

Q: For a pulley system positioned on a ramp what is the acceleration of the masses with no friction…

A:

Q: (3)A person in a car that is struck from behind can receive a serious neck injury called whiplash…

A: (a) From Newton's first law   body is at rest, it will remain at rest unless it is acted upon by a…

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!