Newton's Laws
According to newtons 1st law, what do you need to make an object at rest move?
A force
What is a golfballs speed if it travels 1783 cm in 9 seconds? give your answer in m/s
198.11 cm/s
What is the gravitational constant on earth and what are its units?
9.8 m/s^2
What is a pendulums acceleration if it speeds up to 2.1 m/s in 0.214s? Give your answer in m/s^2
9.8m/s^s
What is the 1st step of the scientific method?
Asking a question
What is Newton's second law, and what do the different variables stand for?
F = M x a
Force, mass, and acceleration
How long does it take a pack of sled dogs to travel 4.6 miles at a speed of 7.89 miles/hr?
What force points away from the ground and opposes gravity?
Normal force
While going through a haunted house, a group of students gets frightened by a worker in a mask. The students flee and speed up from 0.27 m/s to 4.5 m/s in 11.6s before escaping the haunted house. What is the students’ acceleration in m/s^s?
0.36m/s^2
What is a students displacement if they get up from their chair, walk 25m to the bathroom, and return back to their chair, give your answer in m.
0m
What is the force that opposes movement
Friction
A flock of geese is flying south for the winter. If the geese travel at a speed of 7.26 m/s for 12 hours, how far do they travel in m?
313,632 m
List the forces and their direction acting on a paper air plane as it falls to the ground
Gravity acting downward, air resistance acting upward/ opposite of motion
How long doe it take a rock to come to a stop if it is traveling down a hill at 5.5 m/s and decelerates at 1.4 m/s^2
3.92 s
What are 2 signs that a research website is trustworthy?
Ending in .gov or .edu
not trying to sell adds or products
cites its sources
appears up to date
Use Newton's 1st law to describe how a golfball starts and stops moving when hit by a club.
The force of the swing acts on the ball to make it move, the force of friction between the ball the air and the ground bring it to a stop.
How long does it take a whale to travel 52km if it can swim at a speed of 3.13 m/s? give your answer in seconds.
16,613 s ... about 4.5 days
Identify the forces and their directions acting on a pumpkin as it is rolled down a hill.
Gravity downward
Normal force, perpendicular to the ground
Air resistance and friction, uphill opposite the pumpkins motion
What is a rocket's change in velocity if it accelerates at 37.99 m/s^2 for 6 minutes?
13,676.4 m/s
Identify the correct label for each unit
ex: seconds measure time
cm/s^2
km
m/s
hr
Acceleration, distance, speed, time
Use Newtons 3rd law to describe what happens when a tennis ball is thrown at a brick wall. Identify the forces at work in the scenario
The tennis ball bounces off of the wall due to a force equal and opposite pushing back on it. The tennis ball enacts a force on the wall, the wall enacts a force on the ball
What is the speed of a drone that can travel 1.7km in 4 minutes. Give the speed in m/s
7.08m/s
Identify the forces and their directions acting on a catapult as it launches a marble down a hallway. Identify the forces on the marble just as it is being launched.
Identify 2 force pairs in the scenario
Catapult:
Gravity downward, normal upward, force of launch to the left, friction/AR to the left
Marble: gravity downward, air resistance opposite of motion, force of launch to the right
Gravity + normal force, Force of launch on both marble and catapult
Challenge: A professional snow skier is 73 seconds into a race traveling 12 m/s when they hit a flat portion of the hill and begin to slow down. At 2 minutes the skier has slowed down to 591 cm/s. What is the skier's acceleration in m/s^2?
0.129 m/s^2
What is a cars total distance traveled if it travels 429m north, then 5.2 km east, and 221,748 cm south.
7846.48 m