Which law says something about, "...a body in motion ramaining in motion?"
1st law
2nd law
3rd law
4th law
Which law helps to define "inertia?"
1st Law
2nd Law
3rd Law
What does Newton's 2^{nd} Law say?
A object will always move at a constant velocity unless acted upon by an unbalanced force.
A object will always move with a changing velocity while it is acted upon by an unbalanced force.
2 cars are following a 35 ton tractor-trailer truck traveling down the highway at a high rate of speed. One of the following vehicles is significantly heavier than the other. Wind coming off the back of the truck shakes them both. One of them does not sway as much as the other. Which one does not sway as much as the other?
The lighter car will sway more than the heavier car.
The heavier car will sway more than the lighter car.
Two model rockets are launched using indentical engines which exert identical forces. Which Law descibes why the heavier rocket has a smaller acceleration.
1st law
2nd law
3rd law
A 14.5 gram rocket is launched by an engine that exerts an average force of 8.00 N. What is the rocket's acceleration?
0.55 m/s^{2}
116 m/s^{2}
552 m/s^{2}
0.116 m/s^{2}
A toy car, 40 g, is propelled by a constant force of 2.0 N. What is the acceleration of the toy car?
20 m/s^{2}
0.020 m/s^{2}
50 m/s^{2}
0.05 m/s^{2}
A 4500 kg car is pushed by 3 boys who exert a force totaling 1500 N. When the boys begin to push the car, it is traveling 4.5 m/s. What is the velocity of the car after 3.0 seconds?
0.3 m/s
3.3 m/s
5 m/s
14.5 m/s
Calvin is pushing Hobbes on a sled, total mass 25 kg. Calvin begins to push with a 50.0 N force while the sled is moving at 5.0 ^{m}/s. How fast is the sled traveling after 10.0 m? (Neglect any frictional forces.)
8.1 m/s
2 m/s
0.5 m/s
5.9 m/s
Which a product of Aristotle's thing?
A body's velocity will change while an unbalanced force acts on it.
A body's will remain at rest while no unbalanced forces act on it.
A body will move at a constant velocity while an unbalanced force acts on it.
A student has modified his pickup truck by putting on larger wheels. Why will his truck take longer to speed up and slow down.
Because the tires have increased the truck inertia.
Because the tires have increased the truck tires rotational inertia.