- The law of inertia applies to...
Your answer:
moving objects
objects at rest
both moving and nonmoving objects
none of these answers
- One object has twice as much mass as another. The first object has twice as much...
Your answer:
gravitational acceleration
all of the obove
inertia
velociity
- An object following a straight-line path at constant speed ...
Your answer:
has a net force acting on it in the direction of motion
must be moving in a vacuum
has zero acceleration
has no forces acting on it
- Friction...
Your answer:
comes from microscopic bumps that act as obstructions to the object's motion
all of the above
is the name given to the force acting between surfaces sliding past one another
acts in a direction that opposes the motion of an object
- You would have the largest mass of gold if your chunk of gold weighed 1N on..
Your answer:
the planet Jupiter
the Moon
doesn't matter
the Earth
- When a woman stands with two feet on a scale, the scale reads 500N. When she lifts one foot, the scale reads...
Your answer:
500N
no answer
less than 500N
more than 500N
- If you hang from two strands of a vertical clothesline, the tension in each line will be half your weight. If the lines are not vertical, but are at equal angles from the vertical, the tension in each....
Your answer:
is the same; half your weight.
is more than half your weight.
is less than half your weight.
no answer
- Which has more mass, a kilogram of feathers or a kilogram of iron?
Your answer:
The feathers
Neither--They both have the same mass
The iron
no answer
- When an object reaches terminal velocity its acceleration is....
Your answer:
9.8 m/s/s
4.9 m/s/s
0 m/s/s
120 m/s/s
- The reason a tennis ball and a solid steel ball will accelerate at the same rate, in the absence of air resistance, is that....
Your answer:
the ball with the larger force also has more mass
the ball with the larger force has the samller mass
they have the same mass
the force acting on them is the same
- A speeding truck slams its brakes and skids to a stop. If the truck's total mass were doubled, its skidding distance would be..
Your answer:
nearly as far, but not quite
the same
half as far
twice as far
- When the angle of an incline with a block resting on it increases, the normal support force..
Your answer:
stays the same
no answer
decreases
increases
- As Bob falls from a high-flying stationary helicopter, his velocity increases and his acceleration....
Your answer:
increases
decreases
no answer
remains the same
- A block (mB) is placed on a frictionless surface. A string is attatched to it and put over a pulley and conected to a hanging mass (mH). The tension (FT) in the string is..
Your answer:
more than the weight of the hanging mass
equal to the weight of the hanging mass (Wt)
no answer
less than the weight of the hanging mass
- For the previous question, the acceleration of the block along the surface is given by....
Your answer:
Wt / mB
Wt / mH
Wt / (mB + mH)
FT / (mB + mH)
- Consider a ball rolling down the decreasing slope inside a semicircular bowl (the slope is steep at the rim), gets less steep towards the bottom, and is zero (no slope at the bottom). As the ball rolls from the rim downward towards the bottom, the rate of gaining speed...
Your answer:
increases
remains the same
no answer
decreases
- An unfortunate bug splatters against the windshild of a moving car. Compared to the force of the car on the bug, the force of the bug on the car is..
Your answer:
smaller
need more information to say
the same
larger
- A force is exerted on the tires of a car to accelerate the car along the road. The force is exerted by the...
Your answer:
road
engine
tires
air
- A Mack truck and a Volkswagen jetta travelling at the same speed have a head-on collision. The vehicle to undergo the greater change in volocity will be the..
Your answer:
Both the same
no answer
Jetta
Mack Truck
- If a truck pulls on a trailer at rest, the trailer pulls equally as much on the truck. Will the trailer be set into motion?
Your answer:
Yes-The truck's pull on the trailer is larger than the trailer's pull on the truck.
Yes, because there is a net force acting on the trailer.
Yes, because there is a time delay between action and reaction.
No, because the forces cancel each other.