a hiker travels north for 3 m, then east for 4 m, find the resultant displacement.
5 m
100
list the symbols from smallest to largest: dm, mm, km, cm, m, Dm
mm, cm, dm, m, Dm, km
200
how many sigfigs does the number 0.00040400 have?
5
200
give one example of how you could change your velocity, but not your speed.
change direction (make a turn)
200
If all things fall at the same rate, why would a feather take longer to hit the ground than a hammer on Earth?
air resistance (friction)
200
Give the magnitude and direction of a duck's displacement that waddles 2.5 m east and 6 m north.
6.5 m at 67 degrees north of east
200
If measurements agree closely with each other but differ widely from the actual value, these measurements are: accurate, precise, neither, or both
precise.
300
give the answer with the correct number of sigfigs:
2.044 x 0.0030
0.0061
300
if I walked 20 m East and then 5 m West, what is my displacement? What was the distance traveled?
15 m East, 25 m
300
when an objects velocity and acceleration vectors are in opposite directions, what happens?
the object slows down
300
If a child dropped a ball while walking at a speed of 1 m/s, from the child's perspective, where does the ball land?
directly underneath him/her
300
the mass of a bar of metal was found during an experiment to be: 8.83 g, 8.84 g, and 8.82 g. the actual value is 10.68 g. these values are: accurate, precise, neither or both
precise
400
give the answer with the correct number of sigfigs:
400.005 + 12.36 + 5000.145
5412.51
400
If a car traveled from 3 m to 18 m in 5 seconds, what would be it's velocity?
3 m/s
400
A race car accelerates from 0 m/s to 30 m/s with a displacement of 45 m. what is the vehicles acceleration?
10 m/s^2
400
an aircraft traveling north at 70 km/h in a 20 km/h crosswind (at right angles) has a ground speed of __________.
72.8 km/h
400
What is the rate of change in velocity?
acceleration
500
give the answer with the correct number of sigfigs:
3.00 x 10 ^ 2 + 2 x 10 ^ -3
300
500
If a hiker were traveling south for 120 s at a rate of 3 m/s, then traveled north for 300 s at a rate of 15 m/s, what would be the hiker's total displacement?
4140 m to the north
500
A tourist drops a camera from a 300 m high cliff. what is the speed of the camera as it hits the water?
76.7 m/s
500
find the y-component of the displacement of an athlete that runs 50 m, 160 degrees across a level field.