Physics Kinematics Level: High School
A rock is dropped from a high tower and falls freely under the influence of gravity . Which one of the following statements is true concerning the rock as it falls ?a) It still gain an equal amount of momentum during each second .
b) It will gain an equal amount of kinetic energy during each second .
c) It will gain an equal amount of speed for each meter through which it falls.
d)It will gain an equal amount of momentum through which for each meter through which it falls .
The amount of momentum it gains will be proportional to the amount of potential energy that it loses .
Physics Kinematics Level: High School
One Dimensional Motion
Consider a freight train . Suppose 15 boxcars pass by in a time of 12.0 s and each has a length of 15.0 m .a) What is the frequency at which each boxcar passes ?
b) What is the speed of the train ?
Physics Kinematics Level: High School
One Dimensional Motion
John is a passenger in a car driving at a constant speed along a busy highway .He notices that there are telegraph poles every 50 in along the side of the road . With his stop watch be measures the time as he passes each pole . His results are summarized in the table below .Distance Time (min: sec)
50 1.6
100 3.6
150 5.2
200 6.2
250 8.6
300 9.8
350 11.5
400 13.7
a) Using the fact that speed = distance/time , plot a graph of distance Vs time and use the graph to find the car’s average speed .
b) John notices a police speed camera during the experiment .If the speed limits is 110 km/hr . is the car speeding ?
Physics Kinematics Level: High School
Projectiles
A football is kicked for a field goal attempt and travels in a parabolic trajectory . You should ignore air resistance . When the football reaches its maximum height , which of the following statement is / are true ?a) The magnitude of the vertical acceleration of the football is less than g , but not zero .
b) The speed of the football is equal to its initial speed .
c) The horizontal speed of the football is the same for its entire flight .
d) The magnitude of the horizontal acceleration is g .
e) The net force on the football is vertically downward
Physics Kinematics Level: High School
Projectile Motion
A ball thrown horizontally from a point 25 m above the ground strikes the ground after traveling horizontally for a distance of 19 m . with what speed (in m/s ) was it , thrown ?a) 5.3
b) 6.1
c) 8.4
d) 9.8
Physics Kinematics Level: High School
One dimensional
A car accelerates from rest at a constant rate for 210 m , reaching a final speed of 25.4 m/s . How many seconds did it take the car to reach this speed ?a) 14.1
b) 16.5
c) 19.3
d) 22.6
e) 26.5
Physics Kinematics Level: High School
Free Fall
An object , initially at rest , is dropped from a height of 20 m . What is the speed of the object when it hits the ground ? (Assume g = 10 m/s2)20 m/s
30 m/s
25 m/s
10 m/s
Physics Kinematics Level: High School
Circular Motion
An object is moving in a circular path of radius 1 m with a uniform speed of 1.0 x 106 m/s . The acceleration of the object has a magnitude of :0
1.0 x 1012 m/s2
1.0 x 103 m/s2
1.0 x 106 m/s2
Physics Kinematics Level: High School
Projectile Motion
A projectile is fired horizontally (from the top of a very high cliff) with an initial speed of 60.0 m/s .a) What is the magnitude of the displacement of the projectile 3.00 seconds after it is fired ?
b) What is the speed of the projectile 3.00 seconds after it is fired ?
c) What is the acceleration of the projectile 3.00 seconds after it is fired ?
Physics Kinematics Level: High School
Free Fall
You and your significant other have decided to celebrate with dinner at the top of the Tower . ( I recommend this , at sunset – but take more than a few $$ with you) After dinner , you decide to take some picture from the viewing at the top of the Tower . Unfortunately you drop your camera over the edge .a) How fast is your digital camera going just before its CCD sensor is smashed back to silicon powder when it hits the sidewalk at the base of the Tower ?
b) How long are you muttering under your breath between the time you drop the camera and hits the sidewalk ?
Physics Kinematics Level: High School
Free Fall
Ball A is dropped from the top of the building . One second later , ball B is dropped from the same building , Consider the balls while they are both in flight . You may ignore air resistance . Which statement are true about this situation ?a) Both balls will hit the ground simultaneously .
b) The difference between their velocities increases .
c) The difference between their acceleration increases .
d) The distance between them stays constant .
e) Both are under the influence of gravity only .
Physics Kinematics Level: High School
One dimensional Motion
You observe that a falling stone takes 0.45 s to pass a window that is 1.10 m tall . What is the speed of the stone as it reaches the bottom of the window ?a) 2.48 m/s
b) 2.90 m/s
c) 3.40 m/s
d) 3.97 m/s
e) 4.65 m/s
Physics Kinematics Level: High School
One Dimensional
A hockey puck slides across flat ice (micro s = 0.23 and micro k = 0.19) for a distance 38 m before coming to stop . What was the puck’s initial speed ?a) 7.2 m/s
b) 8.4 m/s
c) 9.2 m/s
d) 12 m/s
e) 13 m/s
Physics Kinematics Level: High School
One Dimensional
If a flea can jump straight up to a height of 45.0 cm , what is the initial speed as it leaves the ground ?a) 2.10 m
b) 2.97 m
c) 4.41 m
d) 8.82 m
e) 29.7 m
Physics Kinematics Level: High School
One dimensional Motion
A boy of mass 37.5 kg jumps off a diving platform 2.24 m high . He lands in the water and goes under a distance 1.67 m before he stops.a) What is the boys initial potential energy using the lowest point he reaches as the reference height (h= 0) ?
b) What is the boys velocity when he hits the water ?
c) What is the magnitude of the resistive force of the water on the boy ?
