Scientific Notation
What is 3750000 in scientific notation?
3.75 E6
Name 4 scalar quantities
Velocity is which type of quantity and includes _____ and ______
Vector
Magnitude and Direction
Acceleration is which type of quantity?
Vector
What is the constant rate at which an object accelerates in Earth's atmosphere?
9.81 m/s2
What is 0.004 in scientific notation?
4 E -3
Name 2 Vector quantities
Acceleration, Displacement, velocity
Speed is which type of quantity and includes _______
Scalar
Magnitude
A car starts with a velocity of -5 m/s. At the end of 15 seconds, Car A has a velocity of +25 m/s. What is the car's acceleration?
2 m/s2
A person drops a stone from the top of a 45 meter high building. Determine the time that it will take for the stone to reach the ground. Determine the final speed of the stone AS IT HITS the ground.
t = 2.28 seconds
Final Velocity= 29.8 m/s
What is the extended version of 5.23 E 6?
5.23 E 6
What are the positive and negative directions for displacement and distance?
Positive- up, North, East, right
Negative- down, South, West, left
Jim gets on his bike and rides 300 meters west in 60 seconds. What is the average velocity? What is his average speed?
Average velocity- -5m/s
Average speed- 5m/s
A truck moving at 7.0 m/s accelerates to speed of 15.0 m/s within a time of 1.5 seconds. Calculate the truck's rate of acceleration.
14.7 m/s2
An object that is dropped from a helicopter takes 15 seconds to reach the ground. Determine height from which the object was dropped. Determine the speed with which the object hits the ground.
distance= 1111.5 m
Final velocity= 148.2 m/s
What is the extended version of 1.56 E -7
0.000000156
Two men leave the same house at the same time. Bill walks two blocks north, then four blocks south. Joe walks three blocks east, then one block north. (1) Which man travels the greater distance? (2) Which man finishes his trip with the greater displacement?
A car's speed changes from 20 meters per second to 10 meters per second. What is her average speed during her walk?
15 m/s
A driver moving with a speed of 15 m/s sees a "bridge out" sign on the road ahead and begins to apply his brakes. His brakes decelerate the car at a rate of 2.0 m/s2. How much time will it take for the car to come to a stop?
7.5 seconds
A man throws a rock directly upward with an initial speed of 15 meters per second. Determine the time that it takes for the rock to reach its maximum height. Determine the maximum height that the rock will reach.
t= 1.5 seconds
distance= 33.615 meters
325576000
A man drives his car 3 miles north, then 4 miles east. What distance did he travel? What is his displacement from his point of origin?
7 miles and + 5 miles
A boy walks 10 meters in 20 seconds and then 30 meters in 40 seconds. What is his average speed?
2/3 m/s
An object with a velocity of 6.0 m/s north accelerates south at a rate of 5.0 m/s2 for 3.0 seconds. What is the final speed of the object? In which direction is the object moving after 3.0 seconds?
Starting from rest, object A falls freely for 2.0 seconds while object B falls for 4.0 seconds. Compared with object A, object B falls
(1) one half as far (3) three times as far
(2) twice as far (4) four times as far