science
Grade8
Easy
Question
A car of mass 998 kg moving with a velocity of 108 km/h applies its brakes. As a result, its velocity comes down to 36 km/h in 5 s. Its change in momentum is ___ kg.m/s.
The correct answer is: 3992
Related Questions to study
science
A truck moving at a velocity of 15 m/s has a momentum of 46875 kg.m/s. Its mass is ____ kg.
A truck moving at a velocity of 15 m/s has a momentum of 46875 kg.m/s. Its mass is ____ kg.
scienceGrade8
science
Peter owns a remote-control toy car, whose momentum he wants to find out. The speed and direction of motion of the toy car can be controlled using a button. What are the steps/precautions that he needs to follow while making the measurements?
a) Vary the velocity of the toy car uniformly
b) Keep the velocity of the toy car constant throughout the measurement
c) Move the toy car left and right
d) Fix the direction of motion of the toy car
e) Have the measuring tools like a stop-watch and measuring tape ready beforehand
Peter owns a remote-control toy car, whose momentum he wants to find out. The speed and direction of motion of the toy car can be controlled using a button. What are the steps/precautions that he needs to follow while making the measurements?
a) Vary the velocity of the toy car uniformly
b) Keep the velocity of the toy car constant throughout the measurement
c) Move the toy car left and right
d) Fix the direction of motion of the toy car
e) Have the measuring tools like a stop-watch and measuring tape ready beforehand
scienceGrade8
science
Calculate the momentum of a body of mass 5 kg moving at a velocity of 45 m/s
Calculate the momentum of a body of mass 5 kg moving at a velocity of 45 m/s
scienceGrade8
science
The momentum of a body of mass m moving at a velocity v is found to be p. What will be its momentum when its mass gets tripled and its velocity halved?
The momentum of a body of mass m moving at a velocity v is found to be p. What will be its momentum when its mass gets tripled and its velocity halved?
scienceGrade8
science
A ball is thrown upwards. It moves upwards, reaches a certain height, and then starts falling. How does the direction of the momentum vector of the ball vary when the ball is moving upwards and then downwards?
A ball is thrown upwards. It moves upwards, reaches a certain height, and then starts falling. How does the direction of the momentum vector of the ball vary when the ball is moving upwards and then downwards?
scienceGrade8
science
A ball is thrown upwards. It moves upwards, reaches a certain height, and then starts falling. How does the momentum of the ball vary in these three situations?
A ball is thrown upwards. It moves upwards, reaches a certain height, and then starts falling. How does the momentum of the ball vary in these three situations?
scienceGrade8
science
Three bodies A, B, and C of equal mass m move at velocities v, v/2, and v/3. Whose momentum is the highest?
Three bodies A, B, and C of equal mass m move at velocities v, v/2, and v/3. Whose momentum is the highest?
scienceGrade8
science
What is the momentum of a hill of mass 174 tons?
What is the momentum of a hill of mass 174 tons?
scienceGrade8
science
A bullet weighing 50 g is fired to a target at a speed of 1340 m/s. The momentum of the bullet after firing is ___ kg.m/s
A bullet weighing 50 g is fired to a target at a speed of 1340 m/s. The momentum of the bullet after firing is ___ kg.m/s
scienceGrade8
science
A running athlete slows down from 18 m/s to 6 m/s in 3 minutes when she gets closer to the finish line. Her change in momentum is ___kg.m/s if she weighs 57 kg.
A running athlete slows down from 18 m/s to 6 m/s in 3 minutes when she gets closer to the finish line. Her change in momentum is ___kg.m/s if she weighs 57 kg.
scienceGrade8
science
Peter owns a remote-control toy car, whose momentum he wants to find out. The speed of the toy car can be controlled using a button. What are the measurements that he needs to make?
a) Weigh the toy car to find its mass
b) Weigh the remote of the toy car to find its mass
c) The distance the car moves using a measuring tape
d) The time taken by the car to move that distance using a stop-watch
Peter owns a remote-control toy car, whose momentum he wants to find out. The speed of the toy car can be controlled using a button. What are the measurements that he needs to make?
a) Weigh the toy car to find its mass
b) Weigh the remote of the toy car to find its mass
c) The distance the car moves using a measuring tape
d) The time taken by the car to move that distance using a stop-watch
scienceGrade8
science
A moving car of mass 1980 kg has a momentum of 49500 kg.m/s. What is its speed?
A moving car of mass 1980 kg has a momentum of 49500 kg.m/s. What is its speed?
scienceGrade8
science
Calculate the momentum of an athlete of mass 64 kg running at a constant velocity of 5 m/s.
Calculate the momentum of an athlete of mass 64 kg running at a constant velocity of 5 m/s.
scienceGrade8
science
How can we increase the momentum of a body?
How can we increase the momentum of a body?
scienceGrade8
science
The momentum of a body of mass m moving at a velocity v is found to be p. What will be its momentum when its mass gets doubled, and its velocity becomes one-third?
The momentum of a body of mass m moving at a velocity v is found to be p. What will be its momentum when its mass gets doubled, and its velocity becomes one-third?
scienceGrade8
