Physics Kinematics Level: Misc Level
An 1.5 N ball is thrown at an angle of 30% above the horizontal with an initial speed of 12 m/s. At its highest point, the net force on the ball is;
a. 9.8 N, 30% below horizontal
b. zero
c.9.8 N, up
d. 9.8 N, down
e. 1.5 N, down
Physics Kinematics Level: Misc Level
How much faster is a car final speed if you double the gravitional acceleration?
Physics Kinematics Level: Misc Level
If you add 2 m/s to a car,s starting speed would it increase the finalspeed by 2 m/s? should it?explain.
Physics Kinematics Level: Misc Level
If you can build a roller coaster to demonstrate acceleration can youbuild one in which the rider feels a lot of acceleration?explain.
Physics Kinematics Level: Misc Level
A 2000Kg car is slown down uniformly from 20. 0m /s to 5.00 m/s in 4.00s. (A) What average force acted on the car during that time? and (B) How far did the car travel during that time?
Physics Kinematics Level: Misc Level
Att =10 s, which of the statements conditions are true? C and D are at the same position, the velocity of d is greater than the velocity of C, C and D have the same velocity, the acceleration of D is greater than the acceleration of C, C is in front of D.
Physics Kinematics Level: Misc Level
An object is dropped from a helicopter.When it reaches terminal velocity:Gravity no longer acts upon it,all of the upward forces add up to zero, the total force is zero, the acceleration of gravity, g , beconmes 0, the acceleration finally reaches g
Physics Kinematics Level: Misc Level
The acceleration due to gravity is 9.8 m/s squared everywhere on earth.True or False
Physics Kinematics Level: Misc Level
A Motorist travels for 3.o h at 80.0 km/h and 4.0 h at 60.0 km/h. What is her average speed for the trip?
Physics Kinematics Level: Misc Level
A Car travels at 40 km/h for 30 min and 60 km/h for 15 min. How Far does it travel in this time?
Physics Kinematics Level: Misc Level
A Plane flying horizontally at a speed of 50 m/s and at an elevation of 160 m drops a package of supplies. Two seconds later it drops a second package. How Far apart will the two packages land on the ground?
Physics Kinematics Level: Misc Level
A stone is thrown horizontally with an initial speed of 7.5 m/s from the edge of a cliff. A Stopwatch measures the stones trajectory time from the top of the cliff to the bottom to be 2.5 s. What is the height of the cliff?Assume gravitional acceleration is 9.8 m/s squared.
Physics Kinematics Level: Misc Level
an object is thrown directly downward from the top of a very tall building. thespeed of the object just as it is releases is 27.3 m/s. after being thrown, the object falls freelly due to gravity. neglect air resistance and calculate the distance, in meters which the object covers between times t1=2.47 and t2=5.49 s after it is thrown.
a) 123 b) 139 c) 157 d)177 e)200 f) 226 g) 256 h) 289
Physics Kinematics Level: Misc Level
Can an object have zero acceleration and non-zero velocity at the same time? Give examples.
Physics Kinematics Level: Misc Level
An object that is thrown vertically upward will return to its original position with the same speed it had initially if air resistance is negligible. If air resistance is appreciable, will this result be altered, and if so, how? (Hint: the accleration due to air resistance is always in the direction opposite to the motion.)
