SCIENCE 10: Energy Flow in Technological Systems
Which statement describes an object travelling with uniform velocity?
An object moves with constant speed along a straight path.
An object moves with constant speed along a curved path.
An object moves so that an imaginary line segement from the object to a reference point changes in length.
An object moves so that an imaginary line from the object to a reference point changes in direction.
Which distance-time graph most closely represents an object moving with uniform motion?
A
B
C
D
Which speed-time graph most closely represents an object travelling with uniform motion?
A
B
C
D
What does the area under the line of a speed-time graph represent?
Acceleration
Average speed
Elapsed time
Distance travelled
What is the slope of the graph?
4.4 cm/s
8.8 cm/s
9.0 cm/s
13.5 cm/s
What does the slope of the graph indicate about the objects motion?
Average speed
Direction of motion
Distance travelled
Average acceleration
Students made the following statements about scalar and vector quatities 1: a scalar quantity indicates magnitude but no direction. 2: A scalar quantity indicates magnitude and direction. 3: A vector quantity indicates magnitude but no direction. 4: A vector quantity indicates magnitude and direction. WHICH STATEMENTS ARE CORRECT???
Statement 1 only
Statements 1 and 4
Statements 2 and 3
Statement 4 only
Which quantities of motion are vector quantities?
Speed and displacement
Speed and distance travelled
Velocity and displacement
Velocity and distance travelled
Which vector in the diagram corresponds to 2 m (E 20 DEGREE S)?
Vector 1
Vector 2
Vector 3
Vector 4
Based on the position-time graph for an object, what is the average velocity of the object for the first 10.0 s?
1.8 m/s
1.80 m/s
1.8 m/s (E)
1.80 m/s (E)
What was the average speed of the ball?
1.25 m/s
0.0250 m/s
1.25 m/s (E)
0.0250 m/s (E)
What was the average velocity of the ball?
1.25 m/s
0.250 m/s
1.25 m/s (E)
0.250 m/s (E)
An airplance travelled at an average velocity of 250 km/h (E). The resulting displacement was 625 km (E). How long did the trip take?
2.50 h
3.75 h
4.25 h
4.50 h
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