The branch of mechanic concerned with the motion of objects without reference to the forces that cause the motion is
Kinematics
100
Downward movement under the force of gravity only is
Free Fall
100
Two different components of projectiles?
Vertically launched and Horizontaly launched
100
What is Newtons First law?
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
100
True or False: Work and Energy are equal terms
TRUE, because they are both expressed in Joules
200
List one kinematic equation that we have learned from class.
v = vo + at
x = voxt + 1/2at^2
v^2 = vo^2 + 2ax
200
What is the acceleration due to gravity?
9.8 m/s/s
200
an object upon which the only force acting is gravity is?
A projectile
200
What is the formula to find the force of gravity?
Fgrav=G•M1•M2/d²
200
The scalar dot product between Force and Displacement:
Work
300
A man accelerates down a street at 1 m/s2 for 30 s until he reaches a stopping point. Determine the distance traveled before takeoff.
450 meters
300
If an elephant and a mouse are dropping from the same height, which would hit the ground first?
They would hit at the same time.
300
Most common equation used for projectile?
Force= massxacceleration
300
If the forces acting on an object are balanced, then the object will
Not Move
300
If we impart work to an object it will undergo a change in kinetic energy
Work- Energy Theorem
400
A car starts from rest and accelerates uniformly over a time of 5 seconds for a distance of 100 m. Determine the acceleration of the car.
8 m/s^2
400
An object is tossed into the air. As it rises, what happens to the acceleration of the object?
The acceleration is due to gravity and, therefore, constant. It does not change
400
An elevator with a mass of 2000 kg rises with an acceleration of 1.0 m/s/s. What is the tension in the supporting cable?
21,600 N
400
How much work does it take to lift a 20 kg box a height of 2 meters
400J
500
A car drives in a straight line at a constant speed of 60 miles per hour for 5 seconds. Find its acceleration.
no acceleration
500
Chuck is riding the Superman at Six flags. If Chuck free falls for 2.6 seconds, what will be his final velocity?
25.5m/s
500
A force of 10 N acts upon a 8 kg block. Calculate the acceleration of the object:
1.25 m/s/s
500
A mass is resting on a flat surface which has a normal force of 98 N, with a coefficient of static friction of 0.35. What force would it take to move the object?
34.3 N
500
How much power does it take to lift a 15 kg box to a height of 5.4 meters in 6 seconds