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Science > PRE SACE PHYSICS > Flashcards

PRE SACE PHYSICS Flashcards

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1
Q

What is Displacement?

A

The length from starting point to finishing point

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2
Q

What is Distance?

A

the length of total travel

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3
Q

What is Speed

A

the rate at which something moves

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4
Q

What is Average Speed

A

the rate at which someone or something moves over a certain time period

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5
Q

What is Velocity

A

the rate at which something moves in a direction

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6
Q

What is Acceleration

A

the rate of change of the velocity of an object over time

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7
Q

What is the difference between acceleration and deceleration?

A

acceleration is increasing in speed, deceleration is decreasing in speed

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8
Q

How to find the average speed when the distance and time is provided.

A

Distance Divided by Time

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9
Q

How to find the time when the average speed and distance is provided.

A

Distance divided by Speed

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10
Q

How to find the distance when the speed and time is provided.

A

Speed Times Time

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11
Q

A helicopter’s speed increases from 25 m/s to 60 m/s in 5 seconds. What is the acceleration of this helicopter?

A

The formula is V2 - V1 divided by the time.

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12
Q

As she climbs a hill, a cyclist slows down from 25 m/s to 6 m/s in 10 seconds. What is her deceleration?

A

V2-V1 divided by the time

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13
Q

Steps to Find out the Kinetic Energy

A

Mass x Velocity, then square it, then half it

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14
Q

How to convert Km/h, to m/s

A

divide by 3.6

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15
Q

Convert M/S to KM/H

A

multiply by 3.6

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16
Q

How to find the mass with the kinetic energy and velocity provided?

A

2 x KE, Divided By Velocity Squared

17
Q

How to find the velocity when kinetic energy and mass is provided?

A

2 x KE, Divided by Mass, then square root

18
Q

How to find the displacement?

A

A squared plus B squared = Square root of C squared

19
Q

How to solve for V2

A

v1+ a x t

20
Q

A car traveling at a speed of 30.0 m/s encounters a kangaroo and comes to a stop. How much time will it take for the car to stop if it decelerates at -4.0 m/s2?

A

t = v2+ v1divided by acceleration

21
Q

Example of Displacement

A

KM NORTH, CM North

22
Q

Example of Distance

A

KM,M,CM,MM

23
Q

Example of Speed

A

M/S, KM/H

24
Q

Example of Average Speed

A

M/S, K/H

25
Q

Example of Velocity

A

5 M/S East, 10KM/H south

26
Q

Example of acceleration

A

M/S/S

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