science 2/26/18
If you run 100 meters in 10 seconds, what is your average speed?
10 m/s
A cat jumps from a balcony, about how fast is the cat moving after 1.5s? (Think about the acceleration due to gravity)
15m/s squared
Sarah the cheetah ran a 100m dash in 5.95s at the Cincinnati Zoo, setting a world record for mammals. What was Sarah's speed in meters per second?
16.8 m/s
If your car is going 50 miles in 2 hours, what is its average speed?
25mph
Track A was 8 meters long and Track B was 4 meters long. How much time did it take you to walk Track B?
8 seconds
A change in speed per unit of time gives you ____________.
acceleration
The y value on the graph represents...
distance/position
Gravity exerts a force that responsible for making objects...
fall
True or False. An falling objects decreases speed with a constant acceleration regardless of the object's mass.
false
True or False. An object falling in outer space can reach terminal velocity?
false
True or False. The steeper the slope the slower the speed.
false
True or False. You traveled at a constant rate of speed on Track C (the 16 meter track)
false
If you swim the same distance in less time, are you going faster or slower?
faster
____________ is an attractive force between two objects with a rate of acceleration of 9.8 m/s squared.
gravity
In order for acceleration to occur, there much be change in...
speed
The slope of a line on a graph of distance versus time represents_____________.
speed
The x value on a graph represents...
time
True or False. In the ball drop, the ball was accelerating in each frame.
true
True or False. The average speed of an object is the distance it travels in a unit of time
true
True or False. You walked at a constant speed when walking on Tracks A and B.
true
