Displacement and distance
If I run around a normal 400m track ONCE, starting at the starting line, then finishing at the finish line, what is my displacement?
0m
What is the scalar equivalent of velocity?
speed
A car has a speed of 10m/s. If the car travels for 10s, how far is the car from its starting position?
100m
If I throw a ball off a cliff what is the only variable that does not change?
a. Velocity
b. Velocity in the y direction
c. Velocity in the x direction
d. Height
e. Mass
C
Vector A has a magnitude of 1 and points directly east. Vector B has a magnitude of 1 and points directly west. What is the magnitude of A+B?
0
A train starts at +300m relative to the train station. If the trains ends at -4km relative to the train station, then what is the trains displacement?
-4,300m
Is acceleration a scalar or a vector, what about gravity (g) is gravity (g) a scalar or a vector.
Both are vectors, gravity (g) is an acceleration due to earth's gravitational force near the surface (don't worry about the explanation rn, we will cover that in the next unit)
If a ball is dropped and takes 5s to fall to the ground, what is the height at which the ball was dropped?
122.5m
A man is learning to throw a football, if the man wants the football to travel the maximum possible distance, then what is the angle above the horizontal that the man should throw the ball?
45o
Vector A can be defined by A, Vector B can be defined by B. C is a constant. Which of the following equals C(A+B)?
a. CA+CB
b. CA+B
c. A+CB
d. C(CA+CB)
The answer is a.
What is the component of a right triangle that is equivalent with the concept of displacement?
The hypotenuse
What is the correct orientation of the coordinate plane for Physics?
Trick questions! the correct orientation is whatever orientation you want, (unless the problem states otherwise)
A man is riding a motorcycle in the +x direction. If the man starts at position x=+7m with a velocity of +3.6m/s and stops at position x=+60, then what is the value of the acceleration of the motorcycle?
a=-0.122 m/s^2
What is the range Equation? And what is the only type of motion that it applys to?
R = ((Vi^2)(sin(2theta)))/g
It only apples to type 2 projectile motion
Vector A has a magnitude of 44 with an angle of 30o above the x-axis. Vector B has a magnitude of 33 an points along the x-axis. What is A+B?
74.4 at 17.2o above the x-axis
A bank is 3 miles directly west from my house. I go to the bank to deposit a check then go back home, then realize that I left my hat at the bank, so I go back to the bank. When I get my hat back I run into a friend and we go to a bar that is 1 mile directly west of the bank. If my house is my starting point and the bar is my ending point, which is larger, the distance of my journey or the displacement?
Distance = 10 miles
Displacement = 4 miles
Therefore distance is larger
The variable A is acceleration, and the variable B is velocity.What are the units of B^2 /A?
a. m
b. m * s
c. m/s^3
d. 1/s
e. 1/m
A
A car is accelerating at 4m/s^2. If we assume that the car starts at x=0m and stops at x=20m, and the car started with a velocity of 5m/s, what is the time the car took to move the 20m?
2.15s
If a ball is rolled off a cliff with an initial velocity of 10m/s then how far from the base of the cliff does the ball strike the ground if the cliff is 60m tall?
35m
Vector A has a magnitude of 21 and points in the positive y direction (assume normal Cartesian plane), Vector B has a magnitude of 17 and points in the negative x direction. What is the value of A-B? (include both magnitude and direction)
27 with an angle of 51o above the +x axis
If I throw a ball into the air with a speed of 6.9m/s what is the displacement after 1.05s? What about the distance after 1.05s?
Displacement = 1.84m
Distance = 3.02m
Which of the following is NOT a scalar: a person’s height, the altitude on Mt. Everest, the age of the Earth, the boiling point of water, the cost of a book, the Earth’s population, the acceleration of Earth's gravitational pull?
the acceleration of Earth's gravitational pull
If I throw a ball into the air with an initial speed of 4.5 m/s, then what is the:
a. Time until it comes back down to my hand (the same hight at which I released it)
b. Maximum height?
c. Speed at the maximum height?
t=0.918s
Hmax= 1.03m
Speed at Hmax = 0m/s
A man shoots a cannon at an angle of 40 degrees above the horizontal off the side of a castle. The cannon ball has an initial velocity of 19m/s, if the castle has a height of 50m and the target the man is shooting at has a height of 18m (assuming the man hits the top of his target) then how far away from the castle is the target?
about 60m
Vector A has a magnitude of 241.5 at an angle of 54o West of North. Vector B has a magnitude of 118.3 at an angle 32o South of East. What is A+B? (Remember to include magnitude and direction)
123.8 at 39.8o North of West