# Potential Energy Q

Q A rollercoaster of mass 400 kg is stationary at the highest point on the track. It then drops to the lowest point through a vertical distance of 24 m.
Calculate:
a) the potential energy of the car at the top of the ride.
b) the speed of the car at its lowest point, ignoring air resistance.

My answer for (a) is 94176 N, and for (b) is 21.7 m/s

Appreciate if someone could check these answers if correct. If wrong, can they point me in the right direction.
TIA

You used g=9.81 m/s^2, which is fine. Both of your answers are correct.

Thanks for taking the time.

1. 👍 0
2. 👎 0
3. 👁 85

## Similar Questions

1. ### Physics

A rollercoaster car speeds up and down a hill past points a, b, and c as shown. The car has a mass of 500 kg and a speed of 25.0 m/s at point B where the track radius is 10 m. A: What is the maximum speed the car can have at point

asked by Bobby on June 3, 2012
2. ### physics

An inquisitive physics student, wishing to combine pleasure with scientific inquiry, rides on a rollercoaster sitting on a bathroom scale. (Do not try this yourself on a rollercoaster that forbids loose heavy packages.) The bottom

asked by Manny on September 19, 2010
3. ### Physics

The hammer throw is a track-and-field event, popular in Scotland, in which a ball on a rope (the "hammer") is whirled around the thrower in a circle before being released. The goal is the send the ball as a projectile as far down

asked by Jamie on June 24, 2012
4. ### physics

A rollercoaster car loaded with passengers has a mass of 2,000 kilograms. The track of the roller coaster has a semi-circular valley with a radius of 24 meters. If the vehicle has a speed of 18 m/sec at the very bottom of the

asked by Anonymous on April 7, 2013
5. ### physics

A block of mass 0.78kg starts from rest at point A and slides down a frictionless hill of height h. At the bottom of the hill it slides across a horizontal piece of track where the coefficient of kinetic friction is 0.29. This

asked by shyne1 on November 18, 2012
6. ### Physics

A block of mass 0.61kg starts from rest at point A and slides down a frictionless hill of height h. At the bottom of the hill it slides across a horizontal piece of track where the coefficient of kinetic friction is 0.40. This

asked by Emily on March 29, 2016
7. ### Calculus

The profile of a section of a rollercoaster is given by : h(x)=(2500+500sin(100pix))/x. h is the height of track and x is the horizontal position. Is the track going upwards or downwards at x=250m? Ans: to solve this can we just

asked by jess on June 4, 2019
8. ### physics

A block of mass 0.49kg starts from rest at point A and slides down a frictionless hill of height h. At the bottom of the hill it slides across a horizontal piece of track where the coefficient of kinetic friction is 0.28. This

asked by taylor on October 19, 2016
9. ### Physics

A perforated bead of mass 37g moves on a frictionless horizontal circular track of radius R=0.65m. The track runs through the bead. When the bead is at rest in the horizontal position, it is tied to a spring at the centre of the

asked by Anonymous on October 20, 2013
10. ### physics

A railway track travelling along a level at 9 m/s collides with, and becoms coupled to a stationary truck. Find the velocity of the coupled trucks immediately after the collision if the stationary truck has a mass which is : A )

asked by Nelly on February 23, 2011

More Similar Questions