Units
The units for speed
what are m/s?
What is the formula for speed?
Speed = Distance / Time
acceleration =? (symbols and spelled out)
Final Velocity (Vf) - Initial Velocity (Vi) / Change in time (t)
Momentum is represented by what letter?
P
Having both magnitude and direction.
What is a vector?
What is mass?
If Andy travels at 300 kilometers South and his trip takes 3 hours, what is his velocity?
100 km/hr, South
What is the acceleration of a car slowing down from 100 mi/hr to 60 mi/hr in .008 hours after seeing a police car in the road?
- 5000 mi/hr^2
How much momentum does a stationary object have is it ways 100 kg?
0
What is the mass of a car going traveling 7m/s that is transferring 14,000 kg*m/s to a parked car?
2000 kg
Of m/s and m/s^2 which is acceleration and which is speed?
speed = m/s , acceleration = m/s^2
It took 6.5 hours to travel between two cities going at a velocity of 120 km/hr. How far apart are these two cities?
780 km
James is running 2.0 m/s and then speeds up toward the finish line to 8.0 m/s. If he does it in 5s what is his acceleration?
1.2 m/s
What is the velocity of a 5 kg dog with a momentum of 25 kg*m/s?
5 m/s
Mass in motion
What is momentum?
The units for distance
what are meters?
You can paddle at a rate of 1.5km/s in a canoe. How long will it take you to go 5km in guadalupe river?
3.3 s
Calculate the acceleration of a car going 50 mph and stopping at stop light in .003 hours. (round to the nearest tenths)
- 16666.7 m/s^2
Calculate the momentum of a 5 kg baby moving on a train moving east at 72 mi/hr.
360 kg*mi/hr
Direction does not matter when you are measuring momentum.
False, because it depends on the velocity of an object.
Explain why the units of measurement for momentum are kg*m/s.
The formula for Momentum = Mass*Velocity, for this measurement they combine the units of both.
What would a graph look like of a car starting at 0 mph accelerating to 30 mph stopping for 5 minutes and then accelerating to 50 mph?
I will look at boards to see who is right.
What is the acceleration of gravity?
9.8 m/s^2
Two football players crash into each other. Player A has a mass of 72 kg and was going 20 m/s. Player B has a mass of 83 kg and was going 14 m/s. Which had a higher momentum at the crash?
Player A
A system of objects are not moving relative to one another.
What is frame of reference?