Show:
kinematics
free fall
projectile motion
forces
Wor,Power,and Energy
100
Paco walked at a constant velocity of 1.5m/s from his house to the park which has a distance of 800m. The trip took him ______ seconds
What is 533.33 V=d/t d=800 V=1.5 1.5=800/t t=533.33
100
a ball is thrown upward at an initial velocity of 15.5m/s, and takes 4.5 seconds to hit ground. the distance is ____
What is d=171m d=vot+ 1/2g D=? Vo=15.5m/s d=15.5x4.5+1/2x10x4. t=4.5s
100
a vector is________
What is any quantity in physics that has both magnitude and direction.
100
when the Fnet of a system is 0 it is a _________
What is equilibrium
100
a bird lifting a branch that has a mass of 15kg to a height of 40m in 5 seconds. The power used by the bird is ______
What is h=40m g=10m/s m=15mkg W=40x10x15 W=6000J P=6000/5 t=5 P=1200W
200
A car traveled 400m after 10 seconds of constant motion. The car's speed is________
what is 40m/s S=d/t =400/10= 40
200
If you drop a ball at rest from a window and throw a ball upward, and at the same time your friend throws a ball downward. What can be said about all three balls at any given time? A. They all have the same velocity B. They all have the same mass C. Not enough information given D. All of the balls have the same acceleration
What is D
200
the difference between a horizontally launched projectile and a vertically is __________
What is horizontally launched projectiles have no upward trajectory and initial vertical velocity. vertically has both.
200
the law of acceleration states __________
What is the acceleration of an object is directly proportional to the net force and inversely proportional to the mass
200
A person lifts a 25.4kg box 4.5m, the person exerted _____ amount of work
What is W=1143 m=25.4 h=4.5 g=10m/s W=25.4x4.5x10
300
A car at rest accelerates at 3m/s,the displacement is______ when its final velocity is 50m/s
What is 416.67 V^2=Vo^2+aX V=50 Vo=0 A= 3 2500=2x3xX X=416.67
300
On Friday you and your friends decide to jump into the snow. It takes five seconds for you and your friends to it the snow, your velocity is___________
What is v=50m/s v=gt V=? g=10m/s v=10x5 t=5
300
A plane traveling with a horizontal velocity of 100 m/s is 500 m above the ground. At some point the pilot decides to drop some supplies to designated target below. the drop is in the air for ___________
What is 10.1 y=1/2gt^2 -500=1/2(-9.8)t^2 102.04=t^2 t=10.1
300
The law of action/reaction states _______
What is for every action there is a equal, and opposite reaction
300
(True or False) energy non scalar
What is false
400
the difference between total distance traveled and displacement is___________
What is change in position, and how far you travel regardless of direction
400
you throw a cat upward at an initial velocity of 20.45m/s, and it takes 4.53 seconds for it to fall to the ground. the distance is_________
What is d=195.47m v=gt V=? g=10 v=10x4.56 t=4.56 v=45.6
400
trajectory is ________
What is the path followed by a projectile flying or an object moving under the action of given forces.
400
the formula for static friction is _______
What is Fs=MUsxN
400
the equation for power is _________
What is P=w/t
500
to find speed you must divided ________ by _______
What is distance by time
500
you jump off the Brooklyn Bridge, it takes 4.56 seconds for you to hit the water. your velocity is ______
What is v=45.6 v=gt V=? g=10 v=10x4.56 t=4.56
500
a place kicker kicks a football with the velocity of 20m/s and at a angle of 53 degrees. the ball is in the air for _______
What is 3.26 s y=Voyt+1/2gt 0=(15.29)t-4.9t^2 -15.97t=4.9t^2 15.97=4.9t
500
(true or false) static and kinetic friction have the same formula
What is true.
500
A .5kg truck slides across the floor. The initial velocity was 1m/s and accelerates to 3m/s If the net force is 25N, the book traveled ______ far between the two velocities
What is .08 m=.5kg v=3 Vo=1m Fnet=25N W=1/2mv^2-1/2mVo^2 W=1/2x5x9-1/2x.5x1=2J W=fx change of X 2=25xX X=.08