Motion

Question 1

23. Ben is exercising his pony on a large oval track. The pony is trotting at a constant speed of 10m/s around the track. Hitch statement ca;be made true about the pony’s motion?

Answer 1

The pony is accelerating.

Concept 2. Pg. 1

Question 2

(Fill in the blank)

25. The velocity of an object must include both a _____ and a _____

Answer 2

Speed and direction

Concept 1. Pg. 2

Question 3

38. A boat is traveling at 43.2 km/hr. It then goes down a faster part of the river and is now going 14km/hr which gave the boat am acceleration of 25.2 km/hr. How long did it take the boat to reach its new speed?

Answer 3

t= 4hr down river

Concept 1. Pg 2

Question 4

29. Describe the motion of a biker at A, (left bottom corner going up) B, (flat line in middle)and C (going off flat line and into the top right corner) as a shown by distance vs. time graph

Answer 4

A = constant speed
B= not moving
C= constant speed (slower than A)
Concept 2. Pg. 1

Question 5

30. Describe the motion of a biker at A (slope is from the top left to the bottom right at a steep angle), B (slope is flat line, and C as shown by the velocity vs. time graph

Answer 5

A= (-) acceleration (slowing down)
B= 0 acceleration (constant velocity)
C= (+) acceleration (speeding up)
Concept 2. Pg 3

Question 6

34. A man is riding his 4 wheeler at 60km/hr. If he is riding constantly at this rate for 1.5 hours how far did he ride?

Answer 6

FORMULA
d=ts
ANSWER
D= 1.5(60)
D= 90km
Concept 1. Pg 2

Question 7

37. A person walks 3 miles north turns and walks 2 miles East. Calculate the person’s distance traveled and their displacement.

Answer 7

Given
DX = 3.605mi NE
Concept 1. Pg 1

Question 8

38. A boat is traveling at 43.2km/hr. It then goes down a faster part of the river and is now going 144 km/hr which gave the boat an acceleration of 25.2 km/hr. How long did it take the boat to reach its new speed?

Answer 8

Vi= 43.2km/hr
Vf=144km/hr
a= 25.2km/hr
Concept 2. Pg 1