4 years ago

I really need help this was due Friday! I will mark brainiest!

Physics

1 answer:

Svetllana [295]4 years ago

6 0

Answer:

Average speed = (total distance covered) / (time to cover the distance)

You only need the first and last points from the table.

First point: Position=0, Time=0

Last point: Position= 16.34, Time = 2.34 hours

Total distance covered = 16.34 (miles ? km ?)

Time to cover the distance = 2.34 hours

Average speed = (16.34 miles) / (2.34 hours)

Average speed = 6.983 mile/hour

Explanation:

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Answer:

Explanation:

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3 years ago

A net force of 50 N causes a mass to accelerate at a rate of 6.8 m/s2. Determine the mass.

Taya2010 [7]

Force=50N
Acceleration=6.8m/s^2

$\\ \sf\longmapsto F=ma$

$\\ \sf\longmapsto m=\dfrac{F}{a}$

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$\\ \sf\longmapsto m=7.3kg$

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3 years ago

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A bungee jumper attains a speed of 30 m/s just as the bungee cord begins to stretch. If the period of stretch is 2 s while comin

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Answer: $1.53g$

Explanation:

average deceleration= ?

inial velocity: $u=0$

final velocity: $v=30m/s$

time: $t=2seconds$

The first law of kinematics :

$v=u+at$

find a the subject of the formula

$a=v-u/ t$

$a=\frac{0-30} 2$

$a=-30/2$

$a=-15m/s^{2}$

The deceleration about g(acceleration due to gravity) will be:

$15/9.8$

$1.53g$

4 0

3 years ago

Hiii please help i’ll give brainliest if you give a correct answer please thanks!

lakkis [162]

Answer: the first one

Explanation: good luck!

8 0

3 years ago

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A bicycle tire is spinning counterclockwise at 2.70 rad/s. During a time period At 1.90 s, the tire is stopped and spun in the o

Naddik [55]

Answer:

a) -5.40 rad/s

b) -2.842 rad/s²

Explanation:

The direction is important in dealing with such questions. Clockwise is considered negative and counterclockwise is considered positive

a) Δω = final angular velocity - initial angular velocity

= -2.70 rad/s - 2.70 rad/s

= -5.40 rad/s

b) ∝ = Δω/Δt = (-5.40 rad/s)/1.90s = -2.842 rad/s²

7 0

4 years ago