Force Tests

Question 1

4.An object in motion with no unbalanced forces acting on it will

Answer 1

Continue to move in its path at a constant speed

Concept 3 notes unit 6

Question 2

6. The relationship among mass,force,and acceleration is explained by

Answer 2

Newtons 2nd law of motion

Unit 6 concept 3 notes

Question 3

7.For any object, the greater the force that’s applied to it,the greater its ___ will be

Answer 3

Acceleration

Unit 6 concept 2 notes

Question 4

9. An astronaut is planning a trip to a newly discovered orange. According to the law of universal Gravitation, the astronauts weight will be greater than his weight on earth if

Answer 4

The new planet has more gravity than earth

Unit 6 concept 3

Question 5

10. A baseball player swings his bat and misses the ball but hits a fly that was hovering over home plate. The acceleration of the fly compared to what the acceleration of the ball would have been with the same force applied to it would be

Answer 5

Larger

Unit 6 concept 2 notes

Question 6

12. Which statement below is false

Answer 6

Weight is a constant no matter where you are located

Unit 6 concept 3 notes

Question 7

13. When two forces on the same object are equal and opposite, theses forces are called ___ forces

Answer 7

Balanced

Unit 6 concept 3 notes

Question 8

15. What is the weight of the box in the picture to the right?

Answer 8

245N

Unit 6 concept 3

Question 9

17. Consider a watermelon that started from rest and is dropped straight down from a tall building. Air resistance can be ignored.which statement about the watermelon motion is false

Answer 9

the watermelon falls with a constant velocity

Unit 6 concept 3 notes

Question 10

23. A student drops a feather and a rock at the same time from Mrs Taylor’s window. If air resistance wasn’t a factor, what should she observe

Answer 10

The rock and the feather fall at the same rate .

Unit 6 concept 3

Question 11

24.in the picture to the right, if the card were quickly pulled off the cup like the arrow suggests, what property would explain why the coin falls into the cup rather than moving with the card.

Answer 11

Inertia

Unit 6 concept 3

Question 12

25. An object will move at a constant velocity unless an unbalanced force acts upon it

Answer 12

Newton’s 1st law

Unit 6 concept 3

Question 13

28. Tendency of an object to resists changes in motion

Answer 13

Inertia

Unit 6 concept 3 notes

Question 14

29. The attraction any toe objects have on one another

Answer 14

Gravity

Unit 6 concept 3 notes

Question 15

31. A net force acting on an object causes the object to accelerate in the direction of the net force.

Answer 15

Newtons 2nd law

Unit 6 concept 3 notes

Question 16

32. Related to the amount of force needed to change an objects motion

Answer 16

Momentum

Unit 6 concept 3 notes

Question 17

33. Why does someone mot wearing a seatbelt in a car fly forward when the car stops suddenly? Make sure to include which law explains this.

Answer 17

Because objects in motion resists a change in motion due to inertia. Newtons 1st law
Unit 6 concept 3 notes

Question 18

34. Why does it take more effort to make a bowling ball accelerate 25 m/s than to make a tennis ball accelerate 25 m/s. Include what law explains this

Answer 18

The bowling ball has more mass and a tennis bball is very light. Newtons 2nd law
Unit 6 concept 3

Question 19

36.Rank the following object from least inertia to most inertia

Answer 19

Truck, science textbook, pencil

Unit 6 concept 3

Question 20

38. A. What would be the speed of the falling skydiver after 5 seconds

Answer 20

49 m/s

Unit 6 concept 3

Question 21

38. B. What speed will the skydiver eventually reach? What is the speed called?

Answer 21

55m/s terminal velocity

Unit 6 concept 3 notes

Question 22

38. C. Why does this occur?

Answer 22

Gravity and air resistance

Unit 6 concept 3 notes