A Tractor Trailer Truck is Traveling Down the Road

one. The change of distance per unit of measurement time without reference to a item direction is called

inertia

speed

velocity

acceleration

position

2. Which of the following terms is Not related conceptually to the others?

vector

resultant

component

exponent

equilibrant

3. If the cyberspace forcefulness on an object were doubled while at the same time the mass of the object was halved, and so the acceleration of the object is

¼ as keen

½ as cracking

ii times greater

4 times greater

unchanged

4. If conventional (positive) electric current flows from left to right in a wire equally shown in the diagram,

what is the direction of the magnetic field at point P?

toward tiptop of paper

towards bottom of paper

into paper

out of paper

to the right

v. A tractor-trailer truck is traveling down the road. The mass of the trailer is 4 times the mass of the tractor.

If the tractor accelerates forrard, the force that the trailer applies on the tractor is

four times greater than the force of the tractor on the trailer.

2 times greater than the force of the tractor on the trailer.

equal to the strength of the tractor on the trailer.

¼ the forcefulness of the tractor on the trailer.

zero since the tractor is pulling the trailer forwards.

6. An plane with air speed 120 km/h is heading due due north in a wind blowing due east at 50 km/h. What is the ground speed of the aeroplane?

60 km/h

120 km/h

130 km/h

140 km/h

None of these

7. In the absenteeism of air resistance, if an object were to autumn freely near the surface of the Moon,

its velocity could never exceed x m/sec

its acceleration would gradually subtract until the object moves with a final velocity.

the dispatch is abiding.

it will fall with a constant speed.

the acceleration is null.

9. If air resistance tin can be neglected, what happens to the horizontal velocity component of a basketball every bit it is thrown to the basket from the gratis-throw line?

increases

decreases

decreases until the brawl reaches the pinnacle then increases every bit the ball comes downwards

increases until the ball reaches the meridian and then decreases as the ball comes down

remains constant

10. A simple automobile tin can NOT practice which of the post-obit:

have a mechanical reward greater than 1.

change the direction of the force.

movement the resistance a greater altitude than the applied force.

increment the energy put into information technology.

produce a forcefulness on the resistance which is greater than the practical force.

11. Assume that the Earth attracts John Glenn with a gravitational force
F
at the surface of the Earth. When he made his famous second flight in orbit, the gravitational force on John Glenn while he was in orbit was closest to which of the following?

0.95 F

0.l F

0.25 F

0.10 F

goose egg

12. 2 boxes are accelerated to the correct on a frictionless horizontal surface as shown. The larger box has a mass of 9 kilograms and the smaller box has a mass of 3 kilograms.

If a 24 newton horizontal strength pulls on the larger box, with what force does the larger box pull on the smaller box?

3 Northward

vi N

8 N

xviii N

24 N

xiii. A heating curl is rated 1200 watts and 120 volts. What is the maximum value of the current under these conditions?

10.0 A

12.0 A

xiv.1 A

0.100 A

0.141 A

14. A construction laborer holds a 20 kilogram sheet of wallboard iii meters to a higher place the floor for 4 seconds. During these four seconds how much power was expended on the wallboard?

2400 watts

320 watts

27 watts

xv watts

none of these

fifteen. Given the graph of the velocity vs. time of a duck flying due s for the winter.

At what signal did the duck stop its forward motion?

none of these points

16. Which of the following principles best explains why big tractor-trailer trucks more often than not accelerate much more slowly that automobiles?

To every action there is an equal reaction.

Every body attracts every other body in the universe.

A forcefulness is necessary to change the speed or direction of a torso.

The full momentum of interacting bodies is always conserved.

The acceleration of a body is inversely proportional to its mass and direct proportional to the external force acting on the body.

17. The diagram below shows the position and elapsed fourth dimension of a automobile starting from rest and uniformly accelerating in a straight line.

What was the average velocity of the car during the third second?

fifteen one thousand/sec

12 m/sec

9 yard/sec

5 m/sec

2 1000/sec

18. The average dispatch during the entire 3 second interval is closest to

27 k/sec²

9 m/sec^two

half dozen yard/sec²

five chiliad/secⁱⁱ

3 m/sec²

19. A 50 kilogram skater at rest on a frictionless rink throws a two kilogram brawl, giving the ball a velocity of 10.0 chiliad/due south. Which argument describes the skater’southward subsequent motion?

0.4 m/sec in the same direction as the ball.

0.iv m/sec in the contrary direction to the ball.

2 yard/sec in the same management equally the ball.

4 m/sec in the same direction equally the brawl.

iv k/sec in the contrary management to the brawl

A Tractor Trailer Truck is Traveling Down the Road

Source: http://dev.physicslab.org/Document.aspx?doctype=5&filename=Compilations_AAPTQuizzes_PB1999_part1.xml

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