Question

A luge and its rider, with a total mass of 50 kg, emerge from a downhill...

A luge and its rider, with a total mass of 50 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 39 m/s. If a force slows them to a stop at a constant rate of 1.2 m/s2, (a) what magnitude F is required for the force, (b) what distance d do they travel while slowing, and (c) what work W is done on them by the force? What are (d) F, (e) d, and (f) W if they, instead, slow at 2.4 m/s2?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A luge and its rider, with a total mass of 76.0 kg, emerge from a downhill...
A luge and its rider, with a total mass of 76.0 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 35.0 m/s. If a force slows them to a stop at a constant rate of 4.00 m/s2, (a) what magnitude F is required for the force, (b) what distance d do they travel while slowing, and (c) what work W is done on them by the force? What are (d) F, (e) d,...
A box (400 kg) sits inside the trailer of a semitruck traveling at a speed of...
A box (400 kg) sits inside the trailer of a semitruck traveling at a speed of 20 m/s (~ 44 mph). Suddenly, a car in front of the truck stops in the road. The driver of the truck hits the brakes to bring the truck to a stop. Assume that the coefficient of static friction µs = 0.7 between the box and the floor of the trailer. Assume g = 10 m/s2. When the truck slows down while traveling left,...
1) If a person holds 50 kg object at a height of 2 m above the...
1) If a person holds 50 kg object at a height of 2 m above the floor for 10 s. How much work is done? W = F×d (2) The work done in lifting 30kg of bricks to a height of 20m is W = m ×g × d (Formula, W = F × d but Force = m × g) (3) A total of 4900 J is used to lift a 50-kg mass. The mass is raised to a...
A car of 1000 kg with good tires on a dry road can decelerate (slow down)...
A car of 1000 kg with good tires on a dry road can decelerate (slow down) at a steady rate of about 5.0 m/s2 when braking. If a car is initially traveling at 20 m/s (45 mi/h), (a) How much time does it take the car to stop? (b) What is its stopping distance? (c) What is the deacceleration? (d) How big is the net force to be applied to stop this car? (e) Calculate the work done by this...
A ball of mass m hangs from a thread. A horizontal electric force F acts on...
A ball of mass m hangs from a thread. A horizontal electric force F acts on the ball, such that the thread makes an angle theta to the vertical. (a) Find a general expression for the electric force F on the ball in terms of , m, and the gravitational acceleration g. (please be descriptive with this question. (b) Calculate F for = 34, m = 1:0 g, and g = 9:8m=s2. (c) Calculate F for = 89:9, m =...
An object with a mass m = 3.5 kg is released from rest at the top...
An object with a mass m = 3.5 kg is released from rest at the top of the ramp. The length of the ramp is 4 m. The object slides down the ramp reaching a speed of 1.8 m/s at the bottom. (a) How much time (in sec) does it take the object to reach the bottom of the ramp? (use kinematics equations) (b) What is the acceleration of the object (in m/s2 )? (use kinematics equations) (c) If the...
1`A puck of mass 0.110 kg slides across ice in the positive x-direction with a kinetic...
1`A puck of mass 0.110 kg slides across ice in the positive x-direction with a kinetic friction coefficient between the ice and puck of 0.167. If the puck is moving at an initial speed of 15.0 m/s, find the following. (a) What is the force of kinetic friction? (Indicate the direction with the sign of your answer.) N (b) What is the acceleration of the puck? (Indicate the direction with the sign of your answer.) m/s2 (c) How long does...
A crate of 41.3-kg tools rests on a horizontal floor. You exert a gradually increasing horizontal...
A crate of 41.3-kg tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the crate just begins to move when your force exceeds 337 N . After that you must reduce your push to 202 N to keep it moving at a steady 20.0 cm/s . Part A.) What is the coefficient of static friction between the crate and the floor? (static fraction=???) Part B.) What is the coefficient of kinetic...
A green hoop with mass mh = 2.4 kg and radius Rh = 0.14 m hangs...
A green hoop with mass mh = 2.4 kg and radius Rh = 0.14 m hangs from a string that goes over a blue solid disk pulley with mass md = 2.3 kg and radius Rd = 0.08 m. The other end of the string is attached to an orange block on a flat horizontal surface that slides without friction and has mass m = 3.6 kg (see Figure 1). The system is released from rest. (a) What is magnitude...
A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of...
A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of 7.10 N is applied. A 0.440-kg particle rests on a frictionless horizontal surface and is attached to the free end of the spring. The particle is displaced from the origin to x = 5.00 cm and released from rest at t = 0. (Assume that the direction of the initial displacement is positive. Use the exact values you enter to make later calculations.) (a)...