Speed
How fast an object is moving. Always measured in terms of unit of distance divided by a unit of time. The distance covered per unit of time.
What is speed
Velocity is considered speed with the addition of _____________.
What is direction
The change of velocity divided by time is____________.
What is acceleration
A ball is thrown upwards and caught when it comes back down. In the absence of air resistance the speed of the ball caught would be: (more, less or the same )as the speed when thrown upwards
What is the same
How can an object be moving and still be in equilibrium?
Dynamic equilibrium- Constant speed and one direction
The equation for finding speed
What is distance/time
The distance that an object travels in 15 s at a speed of 10 m/s.
What is 150 m
A train travels 10 meters in the first second, 10 meters in the 2nd second and 10 meters in the third second. Its acceleration is ______________.
What is 0 m/s2
If you drop a coin and a feather at the same time in a tube filled with air, which will reach the bottom of the tube first?
What is coin
State Newton's 1st Law
Object at rest will stay at rest, object in motion will stay in motion unless acted on by an unbalanced force.
When you look at the speedometer in a moving car, you can see the car's.....what type of speed?
What is instantaneous speed
What is the equation to find the velocity of a free falling object
v = g * t or velocity = (gravity)(time)
It is the equation to find acceleration.
a = (vf - vi) / t
What is the equation to find the distance (how far) a free-falling object will fall?
d = ( g * t2 ) / 2
Which of the following is a vector quantity?
Mass, Velocity, Speed, Distance
Only VELOCITY is a vector quantity because it has both Magnitude and Direction
Suppose you take a trip that covers 300 miles in 3.5 hours. What is your average speed?
What is 85 miles per hour
What is the velocity of a motorcycle traveling 10 km west in 3 hours?
What is 3.33 km/h west
A car starts from rest and after 9 seconds it is moving at 63 m/s. What is the car's average acceleration?
What is 7 m/s^2
A freely falling object starts from rest. After falling for 4 seconds, it will have a speed of about
What is 40 m/s
What is the equation to find average speed?
Total distance covered divided by time elapsed.
What is the velocity of a free-falling ball after 4 seconds.
v= gt = 40 m/s
A ball is thrown straight down. Every second it accelerates how much?
10m/s2 = gravity
When something falls to the ground, it accelerates. This acceleration is called the acceleration due to gravity and is symbolized by the letter g. What is the value of g on Earth's surface?
What is 10 m/s2
You're in a car that is going around a curve and the speedometer reads a constant 30 mph. Which of the following is NOT true?
-You and the car accelerating
-Your speed is constant
-Your velocity is constant
-Your acceleration is constant
Your velocity is constant IS NOT TRUE.
Because you are going around a curve.