How fast is an object falling, 3 seconds after being dropped from rest?
- 9.8 m/s
- 19.6 m/s
- 29.4 m/s
- 39.2 m/s
A cyclist traveling at 14 m/s [S], brakes smoothly and stops in 4.0 s. What is the cyclist’s average acceleration?
- 3.5 m/s2 [S]
- 17.0 m/s2 [N]
- 7.0 m/s2 [N]
- 3.5 m/s2 [N]
A model RC car can accelerate at 5 m/s2
If it reaches 40 m/s after 6 seconds what was the car’s initial speed?- 0 m/s
- 10 m/s
- 20 m/s
- 30 m/s
A motorbike starting from rest and undergoing uniform acceleration reaches a velocity of 20 m/s [N] in 8.0 s. What is the acceleration of the motorbike?
- 20 m/s2 [N]
- 2.5 m/s2 [N]
- 160 m/s2 [N]
- 12 m/s2 [N]
In a lab experiment a dynamics cart is accelerated at 3 m/s2 from an initial velocity of 5 m/s to 20 m/s. How long did this motion take?
- 5 seconds
- 10 seconds
- 15 seconds
- 20 seconds
In a race a car traveling at 53 m/s or 190 km/h comes to a full stop in 5.0 s. What is the acceleration of the car?
- 10.6 m/s2
- 0.0 m/s2
- –10.6 m/s2
- 5.0 m/s2
By analyzing skid marks police officers can …?..
- determine the maximum speed at which cars were traveling before an accident
- determine the minimum speed at which cars were traveling after accident
- determine the minimum speed at which cars were traveling before an accident
- determine the which cars were stopped before an accident
- determine the maximum speed at which cars were traveling before an accident
Biologists often use tracking devices such as radio collars and satellite technology ..?...
- to keep the animals safe.
- to feed hungry animals.
- to track animal motion
- to protect the animals from poachers
..?.. refers to an object’s location within a frame of reference.
- position
- distance
- acceleration
- uniformity
The slope of a v-t graph yields a value for ..?..
- position
- speed
- velocity
- acceleration
The graph below is a velocity –time graph.
What type of motion is illustrated by the graph?
- Uniform motion
- Accelerated motion
- Uniformly accelerated motion
- Non uniform motion
The graph below is a distance–time graph.
Which object is moving slowest?- A
- B
- C
- None of the above
Find the resultant displacement in the following; a dog runs 10 m[W], 5 m[E], 16m[E] and then 12m[W].
- 1 m [E]
- 43 m
- 1 m [W]
- 1 m [NS]
In a lab experiment a dynamics cart is accelerated at 3 m/s2 from an initial velocity of 5 m/s to 20 m/s. How long did this motion take?
- 5 seconds
- 10 seconds
- 15 seconds
- 20 seconds
A graph is so useful because ..?..
- a picture is worth a thousand words
- they are hard to draw
- they are drawn to scale
- you can compare variables visually on a common scale
- a picture is worth a thousand words
While you were waterskiing at the cabin last summer you usually maintained a constant speed of 20 m/s. How long did it take to travel 600 m?
- 30 seconds
- 25 seconds
- 3 seconds
- 1200 seconds
The speed at which an object is traveling, at a specific instant in time is to as ..?..
- instantaneous speed
- constant speed
- stop time
- data points
What is the value of the slope of section A in the graph?
- 10 000 km/month
- 5000 km/month
- 2500 km/month [S]
- 1000 km/month [S]
What is happening in section C of the graph?
- The object is stopped
- There is no data for the object
- The object is accelerating
- The object is moving uniformly.
A quantity that doesn’t involve direction is called a..?.. quantity
- vector
- metric
- measured
- scalar
Round to 3 decimal places: 5.3254
- 5.326
- 5.334
- 5.3254
- 5.325
. ..?.. vectors are drawn from the tail of the first to the head of the last
- Resultant
- Force
- Cumulative
- Initial
A truck driver travels 390 km straight north for a delivery, then travels 180 km south for lunch find the driver’s displacement
- 570 km
- 210 km [S]
- 210 km [N]
- 570 km [N]
A=½bh Solve for b
- b= 2A/h
- b=2Ah
- b=A/2h
- b=2Ah
Refer to the graph below what is the change in position?
- 15 km
- 15 km [N]
- 15 km [S]
- - 20 km