A quanity that has both magnitude and direction is called a scalar
What is false?
100
Displacement is a what type of quantity?
What is Vector
100
Distance is what type of quantity?
What is Scalar?
100
In the absence of air resistance, the angle at which a thrown ball will go farthest at what degrees?
What is 45 degrees?
100
Suppose a small plane can fly at 200 km/h relative to the surrounding air. Suppose also that there is a 40 km/h tailwind. How fast does the plane's shadow move across the ground?
What is 240 km/h?
200
The length of a vector represents its magnitude
What is true?
200
To find the components of a vector, you should draw the vector with correct magnitude and orientation, draw the retangle so that the vector is a diagonal and ____________
What is measure the sides of the triangle?
200
A scalar is a quantity that has
What is magnitude?
200
In the absence of air friction, the verticle component of a projectile's velocity doesn't change as the projectile moves.
Always true
Sometimes True
Always false
What is Always FALSE?
200
A cannon ball is launched horizontally from a tower. If the cannon has a barrel velocity of 100 m/s, where will the cannonball be 1 second later? Neglect air resistance.
What is 100 m down range?
300
When adding two vectors at right angles, the resultant of the vectors is the algebraic sum of the two vectors
What is fasle?
300
Any vector can be represented by two other vectors that are what to each other?
What is right angle to each other?
300
Pick the scalar quanity :Speed or Velocity
What is Speed?
300
At the instant a ball is thrown horizontally with a large force, an identical ball is dropped from the same height. Which ball hits the ground first?
The horizontally thrown ball
the dropped ball
Both at the same time
What is the both at the same time?
300
A ball is rolled horizontally off a cliff. Its inital velocity is 11.3 m/s. it falls 86 meters. Determine the Speed of impact. (a2 + b2 = c2)
Vx = 11.3 m/s
Vy = -41.1 m/s
What is 42.63 m/s?
400
Wind velocity can be represented as a scalar quanity.
What is false?
400
A vector is a quanity that has what two things?
What is magnitude and direction
400
Is accleration a Scalar quanity?
What is No?
Accleration is a VECTOR quanity - it defines the rate at which an object changes its velocity
400
A ball is thrown into the air at some angle. At the very top of the ball's path, its velocity is
entirely verticle
Entirely Horizontal
Both verticle and horizontal
What is ENTIRELY HORIZONTAL?
400
A ball is dropped from a height of 10 m, how long does it take to get to the ground?
d = 1/2gt t = Square root of 2d/g
G= 10 m/s
What is 1.4 seconds?
500
The vector sum is called the resultant
What is true?
500
When representing velocity as a vector the length of the arrow represents what three things?
What is speed, direction, and suitable scale
500
Is mass a SCALAR Quanity?
What is YES
500
A ball thrown into the air will never go as far as physically ideally would predicted because
What is air friction?
500
A ball is rolled horizontally off a cliff. Its initial velocity is 11.3 m/s. It falls 86 meters. Determine the velocity at impact. Vf = Vi + at
Given:
t = 4.19 Vi= 0 m/s a = -9.8 m/s