(a) How high (in m) a hill can a car coast up (engine disengaged) if friction is negligible and its initial speed is 90.0 km/h? ____________ m (b) If, in actuality, a 750 kg car with an initial speed of 90.0 km/h is observed to coast up a hill to a height 17.0 m above its starting point, how much thermal energy (in J) was generated by friction? (Enter a number.) ____________ J (c) What is the average force of friction (down the slope) if the hill has a slope 2.5° above the horizontal? (Enter your answer in N. Enter a number.) ____________ N

Q: An 80.0-kg skydiver jumps out of a balloon at an altitude of 1,190 m and opens the parachute at an…

A:

Q: A man on a motorcycle plans to make a jump as shown in the figure. If he leaves the ramp with a…

A: In this case, we can use projectile motion concept because the biker is subjected to no other force…

Q: A car is moving at an initial speed of 65 kph was stopped within 3 seconds after the application of…

A:

Q: A small block is sent through point A with a speed of 11 m/s, as shown in the figure. Its path is…

A:

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x<0…

Q: If a 3.15 kg object is placed on a frictionless incline of 70.5 º and released from rest, what is…

A: Given, mass of the object, m = 3.15 kg angle of inclination of the plane, θ = 70.5° initially the…

Q: han on a motorcycle plans to make a jump as shown in the figure. e leaves the ramp with a speed of…

A: u = 32 m/s  ux= 30.4m/s at max height

Q: A 14 kg penguin slides on its belly down an icy, frictionless glacier. If the penguin started from…

A: Write the given values of the problem- Mass=14 kg final speed(vf) vf=14 m/s

Q: An electric locomotive accelerates a 650-ton train of wagons to 140 km/h on an uphill line with a…

A: Given, m=650000kg v=140km/h Gradient=10.5% ∆V=30km/h The initial acceleration is, Hence, the…

Q: You are designing a ski jump ramp for the olympics. You need to calculate the vertical height (h)…

A: In this question it is given that when designing a skyjump ramp for the Olympics  We need to…

Q: Calculate the speed of a 2.1 x 10^3-kg car at the bottom of a driveway if it starts from rest at the…

A: The mass of the car is M=2.1×103 kg The length of the driveway is D=5.0 m The angle of inclination…

Q: A small block moves at point A with a speed of 6 m/s. Its path is without friction until it reaches…

A: Solution:   Given Values,   Point A speed vA=6 m/s Length(L)=8.6 m Coefficient of friction μ=0.65…

Q: In the figure, a 4.1 kg block slides along a track from one level to a higher level after passing…

A:

Q: When a body slides down from rest along a sm inclined plane making an angle of 30° with horizontal,…

A:

Q: A cyclist coasts up a 12.1° slope, traveling 16.0 m along the road to the top of the hill. If the…

A:

Q: If he leaves the ramp with a speed of 29.5 m/s and has a speed of 27.7 m/s at the top of his…

A: Useful formula: Kinetic energy of an object with mass M & speed v is Ek=12Mv2       ...(1)…

Q: cookie jar is moving up a 42 ° incline. At a point 59 cm from the bottom of the incline (measured…

A:

Q: A spring is held by cables so that it is initially compressed by 60mm. This spring is further…

A: We are given spring which is compressed to some distance. The spring potential energy gets stored.…

Q: A small block slides down a frictionless track whose shape is described by x>0, The value of d is…

A:

Q: If the skier coasts up the hill, what is his speed (in m/s) when he reaches the top plateau? Assume…

A: Energy can neither be created nor destroyed. It is simply converted from one form to another and the…

Q: A cookie jar is moving up a 43 ° incline. At a point 50 cm from the bottom of the incline (measured…

A: Draw the free-body diagram of the cookie jar.

Q: A 65.0 kg skier with an initial speed of 10.0 m/s coasts up a 2.50 m high rise as shown in the…

A:

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A:

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A: given      y=x2d for x<0      y=-x2d for x>0     d=2.33     initial velocity of block =0m/s…

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A:

Q: Bob drives a 3500kg truck off a cliff at an initial speed of 11m/s. The truck hit the bottom of the…

A: Given in question - Mass of truck(m) = 3500 KgInitial speed(u) = 11 m/sFinal speed(v) = 18 m/sTo…

Q: An object is thrown up from the height h0 with the speed 20 m/s. If the maximum height that the…

A: Given data The initial height is ho The maximum height is h1=30 m The initial speed is u=20 m/s The…

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A: The frictionless track is described as, y=x2d for x>0 and y=-x2d for x<0. The value of d is…

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A: Given values: Equation of y, y=x2d           for x<0y=-x2d       for x>0 Value for d = 2.10 m…

Q: A mass is an initial speed of v down a ramp inclined at an angle of θ to the horizontal. The…

A: We are given initial speed. We draw free body diagram of the mass. We then  find acceleration of…

Q: 1 kg is released from height h, = 12 m. Its path is withor 1) In Figure, a block with mass m =…

A: Given that: Mass of the block, m=1 kgInitial height, h1=12 mPath length between B to C, d1=12…

Q: If the speed of a car is increased by 95%, by what factor will its minimum braking distance be…

A: Consider the initial speed of the car is u.

Q: A 60.0 kg skier starts from rest at the top of a 1500.0 m long trail which drops a total of 230.0 m…

A:

Q: b) A block slides up a ramp that has an angle of 42° with respect to the horizontal. At the bottom…

A:

Q: In the figure, a 4.4 kg block slides along a track from one level to a higher level after passing…

A: Given: In this question, the given values are, m=4.4 kg, vo=6.4 m/s, ∆h=1.1 m, μk=0.590. To find the…

Q: 55 kg skier starts from rest at the top of a ski jump, point ? shown in the figure, and travels down…

A:

Q: A ski jumper starts from rest 40.0 m above the ground on a frictionless track and flies off the…

A: Given,Height of the track, h1 = 40.0 mthe track is at an angle of, 45°(above the horizontal)at an…

Q: A proton (mass m = 1.67 x 10-27 kg) is being accelerated along a straight line at 6.20 × 1011 m/s²…

A:

Q: A cookie jar is moving up a 45 ° incline. At a point 53 cm from the bottom of the incline (measured…

A:

Q: In a downhill ski race, surprisingly, little advantage is gained by getting a running start. (This…

A: Distance= 64.0 m Angle (θ) = 29°

Q: A cookie jar is moving up a 42 ° incline. At a point 56 cm from the bottom of the incline (measured…

A: When the jar moves up to the incline the friction force and the gravitation force both will act…

Q: A skier, starting from rest, moves from the top of a ramp to the bottom.  If the vertical drop is…

A:

Q: A man on a motorcycle plans to make a jump as shown in the figure. If he leaves the ramp with speed…

A: The given problem can be considered as a projectile motion. A projectile is the name given to any…

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.