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Ch.5-6
Ch.7
Mixed Review
100
The SI unit for length
What is meters
100
Is a quantity that has both direction and magnitude
What is a vector
100
define work
the product of the magnitude of the component of a force along the direction of displacement and the displacement
100
define roational motion
motion of a body that spins about an axis
100
what is tangential acceleration?
the instantaneous linear acceleration of an object directed along the tangent to the object's circular path
200
2.2cm = ? mm
What is 22mm
200
Is a vector representing the sum of two or more vectors
What is a resultant
200
how much work is exerted on a cart pulled 3m by a force of 50N at an angle of 30 degrees above horizontal
130J Pg. 169 sample 5A
200
In science, how should you measure angles?
in radians
200
describe a perfectly inelastic collision
two objects stick together and move as one mass after the collision
300
The distance Anna covers in 137 sec. if Anna runs with an average velocity of 6.02m/s east.
What is 825m east v=(x/t) which moves to x=vt
300
Find a planes resultant vector if it traveled 50m east and 40m north
What is 64.03m
300
define mechanical energy
the sum of kinetic energy and all forms of potential energy
300
how many radians are there in 267.0125 degrees?
What is 4.66
300
What is Newtons first law?
an object at rest remains at rest & an object in motion remains in motion at constant velocity until it experiences a net external force
400
A car travelling 7m/s accelerates uniformly at 2.5m/s^2 to reach a speed of 12m/s. How long does it take this acceleration to occur?
What is 2s Pg. 49 practice 2b #2
400
give one example of a field force
gravity from earth acting on an object answers may vary
400
a 193kg curtain needs to be raised 7.5m at constant speed in as close to 5seconds as possible. The power ratings for three motors are lister as 1kW, 35kW, and 5.5kW. Which motor is best for the job?
What is 2.8kW needed so the 5.5kW motor would be best Pg. 188 sample 5F
400
While riding a carousel rotating clockwise, a child travels through an arc length of 11.5m. If the child's angular displacement is 165 degrees, what is the radius of the carousel?
What is 3.99m Pg. 246 sample 7A
400
A 24kg crate initially at rest on a horizontal floor requires a 75N horizontal force to set it in motion. Find the coefficient of static friction between the crate and the floor.
.32 Pg. 145 sample 4C
500
a car reaches a speed of 42m/s then decelerates and comes to rest 5.5s later. How far did the car move before stopping?
What is 120m Pg. 53 sampe 2C
500
state Newtons 3rd law
if two objects interact, the magnitude of the force exerted on object 1 by object 2 is equal to the magnitude of the force simultaneously exerted on object 2 by object 1, and these forces are opposite in direction
500
a .015kg marble moving to the right at .225m/s makes an elastic headon collision with a .03kg shooter marble moving to the left at .18m/s. After the collision, the .015kg marble moves left .315m/s. Assume that neither marble rotates before or after the collision and that both marbles are moving on a frictionless surface. What is the velocity of the .03kg marble?
9x10^-2 m/s right Pg. 228 sample 6G
500
the wheel on a bicycle moves 11 rad in 2 sec. What is the wheel's angular acceleration of its initial angular speed is 2rad/s?
3.5rad/s^2 Pg. 251 sample 7D
500
what is physics?
the branch of science concerned with the nature and properties of matter and energy. The subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms.