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Kelly is sledding on a snowy hill in the winter. The energy the sled has as it slides down the hill is a form of?
kinetic energy, as it is moving due to its speed and motion on the snowy hill.
If a ball rolls down a hill does its speed or acceleration increase?
The speed of the ball increases as it rolls down the hill due to the acceleration caused by gravity. The ball will accelerate at a constant rate as it moves downhill, increasing its speed until it reaches the bottom of the hill.
Are you accelerating when you use cruise control?
No, when cruise control is engaged, it maintains a constant speed set by the driver without actively accelerating or decelerating. If the vehicle encounters a hill or incline, cruise control may increase throttle temporarily to maintain the set speed.
How do kinetic and potential energy change as the car rolls down the hill?
As the car rolls down the hill, its potential energy decreases as it loses height due to gravity pulling it downwards. This potential energy is converted into kinetic energy, resulting in an increase in the car's speed as its kinetic energy increases. At the bottom of the hill, most of the potential energy is converted into kinetic energy when the car is moving at its maximum speed.
What stops a motion of a sled moving down a snowy hill?
friction
A car travels up a hill at a constant speed of 45 km perh and returns down the hill at a constant speed of 61 km per h Calculate the average speed?
53
Does weight speed up an object moving down a hill?
It does if it is on wheels
An object can be accelerated even though its speed remains constant give an example of such a situation?
An example of an object being accelerated even though its speed remains constant is a car traveling down a hill. Even if the driver maintains constant pressure, the car will accelerate due to the incline of the hill.
Kelly is sledding on a snowy hill in the winter. The energy the sled has as it slides down the hill is a form of?
kinetic energy, as it is moving due to its speed and motion on the snowy hill.
If a ball rolls down a hill does its speed or acceleration increase?
The speed of the ball increases as it rolls down the hill due to the acceleration caused by gravity. The ball will accelerate at a constant rate as it moves downhill, increasing its speed until it reaches the bottom of the hill.
When velocity will be constant what will be the energy?
Kinetic energy will be constant, but total energy (KE+PE) might not be. If the car, say, is climbing a hill at a steady speed, its KE is constant, but the work done by the engine is being used to increase PE.
What makes speed change?
wind speed changes because when it goes up a hill or down a hill or over a valley the height and temperature drop or increase and it speeds up the wind and then when it levels out again from the bottom of the hill it slowly goes back to how it was from lots of little ups and downs in the shape of the earth.
What is the difference from a moving car and a stationary car?
speed! a moving car is having a force greater than the friction of the tires/air (and gravity on a steep upward hill) applied to it, and is moving forward. The force can come from the engine, or external forces.
Are you accelerating when you use cruise control?
No, when cruise control is engaged, it maintains a constant speed set by the driver without actively accelerating or decelerating. If the vehicle encounters a hill or incline, cruise control may increase throttle temporarily to maintain the set speed.
How are constant speed and average speed different?
Ans:Imagine you ride a cycle to your mates house. You have with you a cycle speed computer that measures your speed through out your journey. You can imagine that your speed is likely to keep changing throughout your journey: you might have to stop for traffic lights (then your speed would be zero at that moment), and then you might come to a steep hill, where you go very fast. You can see that over the course of the journey your speed has changed a lot!Now, if you wanted to know how quickly you got there, you could simply look at your timer, and the distance you travelled divided by your total time is the average speed!If you had a constant speed this would be where you cycle there at the same speed all the way there. Is this a realistic thing to happen in the real world? Remember the traffic lights you had to stop for?So we use average speed instead.However, if you broke your journey up into segments, like the hill bit, and the traffic light bit, then you might be able to say at that instant in time, you had a constant speed.
How do kinetic and potential energy change as the car rolls down the hill?
As the car rolls down the hill, its potential energy decreases as it loses height due to gravity pulling it downwards. This potential energy is converted into kinetic energy, resulting in an increase in the car's speed as its kinetic energy increases. At the bottom of the hill, most of the potential energy is converted into kinetic energy when the car is moving at its maximum speed.
What stops a motion of a sled moving down a snowy hill?
friction
