Q: How long does it take a 2500 kg car to slow down from 15 m/s if it strikes a wall with a force of…

A:

Q: Mr. M is driving his truck, which has a mass of 2200kg, at a speed of 125km/h on the 401. He notices…

A: Mass of the truck is m = 2200 kg Initial speed of the truck is u = 125 km/h Tapping distance is S =…

Q: A 138-Newton horizontal force is exerted upon a 4.6 kg box to move it across a level surface at a…

A: Draw the free-body diagram of the object.

Q: An airplane of mass 1.50 x 104 kg is in level flight, initially moving at 60.0 m/s. The resistive…

A:

Q: A 0.25-kg ball is dropped from a height of 3.0 m above the floor. It rebounds to a height of 2.5 m.…

A:

Q: A 1500N block is in contact with a level plane whose coefficient of kinetic friction is 0.10 If the…

A: Given: The weight of the block is 1500 N. The coefficient of kinetic friction is 0.1. The applied…

Q: As part of a safety investigation, two 1400 kg cars traveling at 20 m/s are crashed into different…

A: Given mass of car m=1400 kgspeed of car u=20 msCars are crashed into different barriers .

Q: A car's bumper is designed to withstand a 4.32 km/h (1.2-m/s) collision with an immovable object…

A:

Q: A boy slides down a hill on a sled (total mass of 40 kg) and coasts onto a flat plain with a speed…

A: GivenTotal mass (m) = 40 KgInitial velocity (U) = 5.8 m/sFinal velocity (V) = 0Force of friction (F)…

Q: A 10 g bullet leaves the 0.75 m barrel of a gun with 250 m/s speed. The force exerted on the bullet…

A:

Q: A 0.140-kg baseball is dropped from rest. It has a speed of 1.20 m/s just before it hits the ground,…

A: Given : m = 0.140 kg vi = -1.20 m/s (negative because of downward motion) vf = 1.00 m/s dt = 0.0140…

Q: A 15 g bullet is shot into a wooden post with velocity of 300 m/s. If the bullet comes to rest over…

A: Given: mass of the bullet is m = 15 g Initial velocity of the bullet v =300 m/s distance traveled by…

Q: During a construction project, a 2500 N object is lifted high above the ground. It is released and…

A: Given:  Weight of object, W = 2500 N  mass, m = 2500 / 10 = 250 kg height from which it falls, h =…

Q: A 0.6 ton motor is moving on a leveled highway at a speed of 108 km/hr. How large is a retarding…

A:

Q: A 5.0 N horizontal force is applied to a 2.5 kg cart for 3.8 m (starting with a speed of 0 m/s).…

A: given; horizontal force=5 N Mass = 2.5 kg initial speed is =0 m/s distance =3.8 m final velocity v

Q: Flying Circus of Physics In February 1955, a paratrooper fell 370 m from an airplane without being…

A:

Q: AN 7. A block of mass 5 kg is being pulled along a board horizontally with a constant velocity; the…

A: Along vertical, net force must be zero.  So, weight of block is balanced by normal force. Since,…

Q: A 40,000-kg cargo plane on board an aircraft carrier is to deliver relief supplies to a far-flung…

A:

Q: 2. A bullet of mass 0.04 kg moving at 90 m/s speed strikes a heavy wooden block and travels inside…

A:

Q: A 51.9-kg skater is standing at rest in front of a wall. By pushing against the wall she propels…

A: The average force exerted on the wall can be given by Favg=mv-ut

Q: a 3kg object is initally moving northward at 15m/s. then a force of 15N, towards the east, acts on…

A: Given mass of the object m = 3 kg Intial velocity of the object = 15 m/s (northwards) Force acting…

Q: A 25.0-gram bullet enters a 2.35-kg watermelon with a speed of 217 m/s and exits the opposite side…

A: Given Mass of the bullet m = 25.0 g = 25.0 x 10-3 kg Mass of the watermelon m’ = 2.35 kg Initial…

Q: A 65-kg ice skater coasts with no effort for 75 m until she stops. If the coefficient of kinetic…

A: Acceleration of the skater

Q: 2. A 6.0-kg block initially at rest is pulled to the right along a horizontal surface by a constant…

A: Given value--- mass = 6 kg. Force = 12 N. distance = 3 m. coefficient of kinetic friction = 0.15 .…

Q: A student (m = 63 kg) falls freely from rest and strikes the ground. During the collision with the…

A: The impulse is given by,

Q: A truck with a mass of 1490 kg and moving with a speed of 12.5 m/s rear-ends a 767 kg car stopped at…

A: According to conservation of momentum -  Initial momentum = Final momentum  Mathematically -…

Q: Grandma has a new car that uses rocket brakes to slow it down. The car has a mass of 850 kg. She…

A: Mass of car (m) = 850 kg Initial speed (u) = 12.8 m/s (in forward direction) Final speed (v) = 9.32…

Q: A golf ball of mass 0.045 kg is hit off the tee at a speed of 34 m/s . The golf club was in contact…

A:

Q: A vehicle with a mass of 3087.02 kg is being tested for its engine consumption by measuring the…

A: Solution: As given that m = 3087.02 kg coefficient of kinetic friction of the wheels is 0.67 initial…

Q: A bullet with mass m, is fired with a velocity v to a hanging target made of wood with mass mw and…

A: This question is based on the conservation of linear momentum.

Q: A tennis ball is coming towards you with a speed of 40 m/s. You hit the ball (mass = 0.06kg) and it…

A:

Q: A 10.2-kg box is sliding across a horizontal floor. It has an initial speed of 1.25m / s and the…

A: Given    A 10.2-kg box is sliding across a horizontal floor. It has an initial speed of 1.25m / s…

Q: A Go Kart (m=D35 kg) has a top speed of 12 m/s. A student traveling at top speed locks the brake to…

A:

Q: The IKAROS spacecraft, launched in 2010, was designed to test the feasibility of solar sails for…

A: Given that, Mass of the spacecraft, m=290 kg Force, F=1.12mN=1.12×10-3N Duration, t=6 months=6×30…

Q: An 85 kg man lowers himself to the ground from a height of 10.0 m by holding onto a rope that runs…

A: The net force on the man is

Q: A cargo truck of weight 6000kg hits a car having a weight of 1600kg. and both vehicles skid together…

A: Given: mass of the cargo truck M = 6000 kg mass of the car              m = 1600 kg Let the initial…

Q: A vehicle with a mass of (2810.67)kg is being tested for its engine consumption by measuring the…

A: The expression used to calculate acceleration of the vehicle is F-μsN=maa=F-μsNm=F-μsmgm Substitute…

Q: A 50 kN truck travelling with a speed of 50 kph hits a lamp post and is brought to rest in 0.1 secs.…

A: The weight of the truck, W=50 kN=50000 N   The mass of the truck, m=Wg=50000 N9.81 m/s2=5096.84 kg

Q: A 0.140-kg baseball is dropped from rest. It has a speed of 1.20 m/s just before it hits the ground,…

A:

Q: A dockworker applies a constant horizontal force of 80.ON to a block of ice on a smooth horizontal…

A:

Q: During a car collision, the knee, thighbone, and hip can sustain a force no greater than 4000 NN.…

A: Given: Maximum force that the knee, thighbone, and hip can sustain F=4000 N Mass of person, m=90 kg…

Q: A hockey player passes a 0.168kg puck that is initially sliding backward at 5.00m/s. The force…

A:

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.