
(REVIEWER 2) 4thQ. Sci9
Quiz by Rizzel Joy Dotillos
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- Q1
When an object is launched into the air, it follows a path known as trajectory. What is the shape of the path followed by a projectile neglecting air resistance?
Asymmetric Line
Parabola
Ellipse
Straight upward
30s - Q2
One player throws the ball up and scored a point. As you watch the ball fly, you notice that it travels a certain distance horizontally. What is the term for the horizontal distance a ball travels during its flight?
Altitude
Displacement
Range
Trajectory
30s - Q3
There are many real-life scenarios where projectile motion can be observed. Which situation below shows the BEST example of a projectile motion?
bullet being fired from a gun
space shuttle orbiting Earth
aluminum can dropped into the recycling bin
jet lifting off a runway
30s - Q4
In projectile motion, it is often assumed that air resistance is negligible so that the only force acting on the object is gravity. What will happen to the projectile when there is air resistance?
can speed up a projectile and change its trajectory
can slow down a projectile and change its trajectory
can only slow down the projectile in motion
has no effect on projectile motion
30s - Q5
What must be the initial speed of an arrow shot at angle of 45⁰above the horizontal if its target is 2.0m away? (Please note this formula: R = vix2)
g
4.43 m
19.6 m/s
4.43 m/s
19.6 m
30s - Q6
What happens to the horizontal velocity of the arrow as it rises and then comes back down? The horizontal velocity _______________________________.
remains constant throughout the flight
decreases on the way up and increases on the way down
increases on the way up and decreases on the way down
is zero throughout the flight
30s - Q7
The angle at which the object is launched is called the angle of release. How does the angle of release affect the height of a projectile?
The greater the angle of release, the lower the height of the projectile.
The relationship between the angle of release and the height of a projectile is unpredictable.
The angle of release has no effect on the height of the projectile.
The greater the angle of release, the greater the height of the projectile.
30s - Q8
A ball is hit at an angle of 30⁰. At what point in its trajectory does this projectile have the least velocity?
Just before it hits the ground.
Halfway between the ground and the highest point.
At the highest point of its flight.
Just after it was launched.
30s - Q9
Ignoring air resistance, at what angle should the soccer player hit the ball for maximum distance?
60⁰
45⁰
30⁰
15⁰
30s - Q10
At what angle of release does the ball reach its maximum height?
15⁰
45⁰
75⁰
60⁰
30s - Q11
Based on the illustration, which of the following statements is NOT TRUE?
An object thrown into the air at an angle of 30˚ will have the same range as when it is thrown at an angle of 45˚.
An object thrown into the air at an angle of 75˚ will have the same range as when it is thrown at an angle of 15˚.
Beyond the angle 45°, as the angle increases, the range decreases while the height continues to increase.
The illustration shows that the ball reaches different ranges and different heights above the ground depending on the angle of release.
30s - Q12
During a basketball game, a player throws the ball towards the hoop. Considering the horizontal and vertical velocity components of the ball’s motion, what happens to its vertical velocity during its flight? It ________________________________________.
changes direction due to gravity
increases due to gravity
decreases due to gravity until it reaches its maximum height, then increases again as it falls back down
remains constant because gravity only affects horizontal motion
30s - Q13
A cargo truck with a mass of 10,000 kilograms and a small car with a mass of 2, 000 kilograms, both traveling at 40km/hr suddenly lose their brakes and crash. Which would cause more damage and why?
Both vehicles would cause the same amount of damage because they are traveling at the same velocity.
The small car would be more damaging because it has less mass.
The cargo truck would be more damaging because it has greater mass.
The cargo truck would be more damaged because it is bigger.
30s - Q14
Linear momentum is a measure of how difficult it is to change an object’s motion. What two factors are used to calculate an object’s linear momentum?
Force and time
Mass and velocity
Force and velocity
Mass and volume
30s - Q15
Two 0.5 kg balls approach each other in opposite direction with the same speed of 1.0 m/s. What is the total momentum of the system before collision?
0 kg. m/s
-1.0 kg. m/s
0.50 kg.m/s
1.0 kg. m/s
30s