Physics: Motion and Displacement

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What is the acceleration of an object moving at a constant velocity of 23.5 m/s over 15 seconds?

0 m/s² (correct)

1.57 m/s²

3.13 m/s²

None of the above

A car accelerates from 0 to 60 km/hr in 10 seconds. What is its acceleration in m/s²?

2.22 m/s²

4.44 m/s²

1.67 m/s² (correct)

3.33 m/s²

What is the final velocity of an airplane that accelerates at 1.54 m/s² for 30 seconds, starting from rest?

46.6 m/s

46.2 m/s (correct)

48.2 m/s

47.0 m/s

If a car accelerates from 55 mi/hr to 60 mi/hr in 10 seconds, what is its acceleration in m/s²?

0.20 m/s² Signup and view all the answers

What is the acceleration of a Lamborghini that accelerates from 0 to 27.8 m/s in 3.40 seconds?

8.18 m/s² Signup and view all the answers

A ball is hit in the opposite direction at 134 m/s. What is its acceleration in the vertical direction?

9.8 m/s² Signup and view all the answers

Who proposed the 'Corpuscular Theory of Light' and explained the refraction of light in his book 'Opticks'?

Isaac Newton Signup and view all the answers

What was observed by Thomas Young when light was shined between two adjacent slits?

Diffraction of light Signup and view all the answers

What is the primary reason for the Earth's seasons?

The tilt of the Earth's axis Signup and view all the answers

What was the significance of Galileo's observation of sunspots?

It provided evidence for the heliocentric theory Signup and view all the answers

What is the name of the substance that Rene Descartes believed light to be a disturbance of?

Plenum Signup and view all the answers

What was the main contribution of Johannes Kepler to astronomy?

The abandonment of circular orbits in planetary models Signup and view all the answers

Who presented a law of reflection and discussed the propagation of light rays in straight lines?

Euclid Signup and view all the answers

What was the outcome of Thomas Young's double-slit experiment?

Proof of the wave theory of light Signup and view all the answers

What was the primary reason for the retrograde motion of planets?

The Earth's motion around the Sun Signup and view all the answers

Who believed that light is emitted by sources other than the eye and that vision is produced when light reflects off objects and enters the eye?

Epicurus Signup and view all the answers

What was the significance of Copernicus' model?

It explained the retrograde motion of planets Signup and view all the answers

What was the main contribution of Galileo's telescope to astronomy?

It enabled the observation of celestial bodies with greater precision Signup and view all the answers

What is the result when the first ball comes to rest and the second ball moves in the opposite direction?

The velocity of the second ball is in the opposite direction. Signup and view all the answers

What is the formula to calculate distance?

Distance = Speed × Time Signup and view all the answers

What is the difference between speed and velocity?

Velocity has direction, speed does not. Signup and view all the answers

What is the unit of velocity?

Meters per second Signup and view all the answers

What does the average speed of an object depend on?

The entire path taken by the object Signup and view all the answers

What is the average speed of the Pacific porpoise in the example?

35.8 kilometers per hour Signup and view all the answers

What type of radiation is mostly absorbed by the ozone layer?

UVC Signup and view all the answers

What happens when the angle of incidence is equal to the angle of reflection?

Specular reflection occurs Signup and view all the answers

What is the result of two light waves meeting halfway, with one crest and one trough?

Destructive interference Signup and view all the answers

What is the main reason for the bending of light as it passes from one medium to another?

Change in optical density Signup and view all the answers

What is the term for the bouncing of light off a rough surface?

Diffuse reflection Signup and view all the answers

What is the term for the phenomenon where light waves meet and create an even brighter or darker kind of light?

Interference Signup and view all the answers