497294
Description
Quiz by tatemae.honne, updated more than 1 year ago
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Question 1
Question
What is the formula for an angle?
Answer
-
arc length/ radius
-
arc length/ time
-
radius x arc length
Question 2
Question
What is angular velocity measured in?
Answer
-
Radians
-
Metres/ second
-
Radians/ second
Question 3
Question
What is the direction of centripetal acceleration?
Answer
-
The direction in which the object is travelling
-
The opposite direction to which the object is travelling
-
Towards the centre of the circle
-
Away from the centre of the circle
Question 4
Question
Centripetal force is a scalar quantity.
Answer
- True
- False
Question 5
Question
A man is riding a bicycle along a road at a constant speed. The wheels of the bike have a radius of 30cm and an angular velocity of 15 rad/s. What is the speed of the bicycle?
Answer
-
2 m/s
-
450 m/s
-
4.5 m/s
-
45 m/s
-
20 m/s
Question 6
Question
According to Kepler's third law, the square of the periodic time of a satellite's orbit about a planet is inversely proportional to which of the following?
Answer
-
The mass of the planet
-
The radius of the planet
-
The distance between the planet and the satellite
Question 7
Question
A particle travels at at constant speed in a circle. What is its angular velocity if it completes 8 revolutions in 4 seconds?
Answer
-
6 π rad/s
-
6 rad/s
-
2 rad/s
-
2 π rad/s
Question 8
Question
Centrifugal force acts in the direction away from the centre of the circle.
Answer
- True
- False
Question 9
Question
When a satellite is orbiting the earth, its linear velocity squared is proportional to which of the following?
Answer
-
R
-
1/R
-
M
-
G
Question 10
Question
T = 2πr/v is the formula for centripetal acceleration
Answer
- True
- False
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