or the following 5 questions wright whether or not it is true-or-false. 1. According to Kepler's third law, the orbital period of a planet is inversely proportional to its average distance from the Sun. True or False 2. A force must act on a car in order for it to go around a curve at a constant speed. True or False 3. A 1 hp motor does more work in one hour than a 1 kW motor. True or False 4. When a rocket is fired, the magnitude of the rocket's momentum is equal to the magnitude of the momenta of its ejected exhaust gases. True or False 5. Both energy and momentum are scalar quantities. True or False For the next following 5 questions fill in the blank. 6. Linear momentum is conserved if and only if the ____ ____ ____ is zero. 7. When a net force acts for some time on an object, the object's linear momentum must change; this change is known as _____. 8. According to the work-energy theorem, the net work done on an object is equal to its change in
or the following 5 questions wright whether or not it is true-or-false. 1. According to Kepler's third law, the orbital period of a planet is inversely proportional to its average distance from the Sun. True or False 2. A force must act on a car in order for it to go around a curve at a constant speed. True or False 3. A 1 hp motor does more work in one hour than a 1 kW motor. True or False 4. When a rocket is fired, the magnitude of the rocket's momentum is equal to the magnitude of the momenta of its ejected exhaust gases. True or False 5. Both energy and momentum are scalar quantities. True or False For the next following 5 questions fill in the blank. 6. Linear momentum is conserved if and only if the ____ ____ ____ is zero. 7. When a net force acts for some time on an object, the object's linear momentum must change; this change is known as _____. 8. According to the work-energy theorem, the net work done on an object is equal to its change in
or the following 5 questions wright whether or not it is true-or-false. 1. According to Kepler's third law, the orbital period of a planet is inversely proportional to its average distance from the Sun. True or False 2. A force must act on a car in order for it to go around a curve at a constant speed. True or False 3. A 1 hp motor does more work in one hour than a 1 kW motor. True or False 4. When a rocket is fired, the magnitude of the rocket's momentum is equal to the magnitude of the momenta of its ejected exhaust gases. True or False 5. Both energy and momentum are scalar quantities. True or False For the next following 5 questions fill in the blank. 6. Linear momentum is conserved if and only if the ____ ____ ____ is zero. 7. When a net force acts for some time on an object, the object's linear momentum must change; this change is known as _____. 8. According to the work-energy theorem, the net work done on an object is equal to its change in
For the following 5 questions wright whether or not it is true-or-false.
1. According to Kepler's third law, the orbital period of a planet is inversely proportional to its average distance from the Sun. True or False
2. A force must act on a car in order for it to go around a curve at a constant speed. True or False
3. A 1 hp motor does more work in one hour than a 1 kW motor. True or False
4. When a rocket is fired, the magnitude of the rocket's momentum is equal to the magnitude of the momenta of its ejected exhaust gases. True or False
5. Both energy and momentum are scalar quantities. True or False
For the next following 5 questions fill in the blank.
6. Linear momentum is conserved if and only if the ____ ____ ____ is zero.
7. When a net force acts for some time on an object, the object's linear momentum must change; this change is known as _____.
8. According to the work-energy theorem, the net work done on an object is equal to its change in ____ ____.
9. Angular velocity is directly proportional to linear velocity (and its square directly proportional to centripetal force!) when its angles are measured in units of ____.
10. If the work done by a certain force is path independent (which means the net work done by the force over a closed path is zero), then the force is said to be ____.
Definition Definition Force on a body along the radial direction. Centripetal force is responsible for the circular motion of a body. The magnitude of centripetal force is given by F C = m v 2 r m = mass of the body in the circular motion v = tangential velocity of the body r = radius of the circular path
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