Dimensional Analysis
How many cm are equal to 1.45 meters? (100 cm = 1 m)
Show your work!
14.5 cm
35. If an object accelerates from rest, with a constant acceleration of 5.4 m/s^2 , what will its velocity be after 28s?
1st Equation
151.2 m/s
3 seconds
(55) What is the velocity of a dropped object after it has fallen for 12 s? (4 Sig figs)
-117.6 m/s
How many kg are equal to 325 g? (1 kg = 1000 g)
Show your work!
0.325 kg
61. An object, moving with a constant velocity, travels 274 m in 23 s. What is its velocity?
2nd Equation
11.9 m/s^2
Look at Graph 3 in Schoology. (1) Which runner was ahead at the 25 second mark? What was their average velocities (m/s) at 45 seconds? They both traveled 190 meters.
(2) 4.2 m/s
(56) A ball is thrown straight down with a velocity of 12 m/s; what will be its velocity 2.0 s after being released? (2 sig figs)
-31 m/s^2
How many mL are equal to 0.004 L? (1 L = 1000 mL)
Show your work!
4 mL
79. An object accelerates from rest to a speed of 24 m/s over a distance of 56 m. What acceleration did it experience?
3rd Equation
5.14 m/s^2
Look at graph 4. (1) How long will it take this runner to travel 80 meters? (2) What is this average runner's velocity? (3) What is this runner's average acceleration?
(1) 4 seconds
(2) 20 m/s
(3) 0
(57) A ball is thrown straight up with a velocity of 12 m/s; what will be its velocity 2.0 s after being released? (2 sig figs)
-7.6 m/s
How many mm are equal to 4,740 m? (1000 mm = 1 m)
Show your work!
4,740,000 mm
38. An object initially at rest experiences an acceleration of 9.8 m/s^2 . How much time will it take it to achieve a velocity of 58 m/s?
1st Equation5.92 s
Compare Graph 1 and 3. How do they differ?
Possible Answers
- Traveling in opposite directions
- Graph 1 depicts one object while Graph 3 depicts 2 object
- Graph 1 has a lower time interval than Graph 3
(58) An arrow is launched straight up from the ground with an initial velocity of 23.4 m/s. How long until it reaches its highest point? (Vf = 0)
(2 sig figs)
2.4 s
How many mg are equal to 0.001 g? (1000 mg = 1 g)
Show your work!
1 mg
64. An object is shot upwards, from the ground, with an initial velocity of 120 m/s. How high will it be after 4.0s?
2nd Equation
401.6 m
Look at graph 4. If this runner was running at a constant velocity indefinitely (for forever) how long would take her to reach a kilometer? (1000 meters)
50 seconds
(59) A ball is thrown straight up from the ground with an unknown velocity. It returns to the ground after 4.0 s. With what velocity did it leave the ground? (3 sig figs) (2 Kinematics Problems put into 1)
19.6 m/s