Lesson 1: Speed and Velocity Answers
9 verified answers2 views
1
Free Preview
Alana is skateboarding at 19 km/h and throws a tennis ball at 11 km/h to her friend Oliver who is behind her leaning against a wall. What is the speed of the tennis ball if someone was watching the exchange on the sidewalk?
A
8 km/hrB
11 km/hrC
15 km/hrD
30 km/hr2
Free Preview
Which formula is used to calculate average velocity?
A
V Subscript a v g Baseline = StartFraction x Subscript f Baseline minus x Subscript I Baseline over t Subscript f Baseline minus t Subscript i Baseline EndFraction
B
V Subscript a v g Baseline = StartFraction t Subscript f Baseline minus t sub I over x sub f minus x sub I
C
Option
D
v Subscript a v g Baseline = StartFraction t over d EndFraction
3
distancetimemotiondisplacement
A
distanceB
timeC
motionD
displacement4
Study the position-time graph for a bicycle.
A
The bicycle has speed but not velocity.B
The bicycle is moving at a constant velocity.C
The bicycle has a displacement of 3 m.D
The bicycle is not in motion.5
Which is an example of speed?
A
Cindy biked westward at 30 km/h.B
A rock is to the left of a flowerpot.C
A dog runs an average of 8 mph.D
Leo lives 2 miles north of Andre.6
Rhea is running towards Sean and kicks a soccer ball to him. Sean is standing still.
A
The speed of the ball from Sean’s reference frame would be greater than the speed of the ball from Rhea’s reference frame.B
The speed of the ball from Sean’s reference frame would be less than the speed of the ball from Rhea’s reference frame.C
The speed of the ball from Sean’s and Rhea’s reference frames would be 0 km/h.D
The speed of the ball from Sean’s and Rhea’s reference frames would be less than 0 km/h.7
The diagram shows a motion map for a train.
A
The train traveled south and then north.B
The train moved at a velocity of 75 mph north.C
The train had a greater velocity when it moved away from the origin.D
The train stopped for 3 seconds.8
Diego is playing basketball. While running at 7 km/h toward Gino, he passes the ball to Gino horizontally. The ball travels at 20 km/h relative to Diego.
A
0 km/hB
7 km/hC
20 km/hD
27 km/h9
Which best describes a reference frame?
A
a distance over which an object movesB
the difference between start and end velocityC
a position from which something is observedD
the average speed of a group of objectsDid you find these answers helpful?
Verified answers available
TRY EDGENUITY HACKS
- Auto Complete Exams
- Auto Complete Assignments
- Skip Videos Instantly
50,000+ students using this