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3 years ago

7. Jezabelle was applying her makeup when she drove into Albuquerque migns busy

Physics

1 answer:

anzhelika [568]3 years ago

5 0

100000N

Explanation:

Mass of car = 1300kg

velocity of car = 11m/s

time = 0.14s

Unknown:

Force = ?

Solution:

To find the force experienced by Jezabelle's car,

Newton's second law :

F = ma = m $\frac{v- u}{t}$

where a = $\frac{v- u}{t}$

v =final velocity

u= initial velocity

t = time taken

F = 1300 x $\frac{11}{0.14}$ = 102142.85N rounding off 100000N

Learn more:

Acceleration brainly.com/question/3820012

#learnwithBrainly

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In the formula vy = ayt, what is the value of ay for an object in projectile motion?

Sergeu [11.5K]

–9.8 m/s<span>2

Just took it and got it right!</span>

8 0

3 years ago

Read 2 more answers

A physics major is cooking breakfast when he notices that the frictional force between the steel spatula and the Teflon frying p

wel

Answer:

Normal force = 8.75 N

Explanation:

given,

frictional force between the steel spatula and the Teflon frying pan=0.350 N

coefficient of friction between material =0.04

normal force = ?

using formula,

Frictional force = coefficient of friction × normal force

$normal\ force = \dfrac{Frictional\ force}{coefficient\ of\ friction}$

$normal\ force = \dfrac{0.350}{0.04}$

Normal force = 8.75 N

8 0

3 years ago

A small fish is dropped by a pelican that is rising steadily at 0.50 m/s.

natima [27]

Answer:

(a) 24.025 m/s. downward.

(b) 31 m

Explanation:

From Newton's equation of motion,

(a)

v = u + gt ................... Equation 1

Where v = final velocity, u = initial velocity, g = acceleration due to gravity, t = time.

Note: Let upward velocity be negative and downward be positive

Given: u = -0.5 m/s (upward), t = 2.5 s

Constant : g = 9.81 m/s²

Substitute into equation 1

v = 0.5+9.81(2.5)

v = -0.5+24.525

v = 24.025 m/s. downward.

(b) using

s₁ = ut + 1/2gt²......................... Equation 2

Where s₁ = distance at which the fish fall after being dropped by the pelican

Given: u = - 0.5 m/s, t = 2.5 s, g = 9.81 m/s²

Substitute into equation 2

s₁ = -0.5(2.5) + 1/2(9.81)(2.5)²

s₁ = -1.25+30.656

s₁ = 29.41 m

also,

s₂ = vt ................ Equation 3

Where s₂ = the distance by which the pelican rise during this time.

Given: v = 0.5 m/s, t= 2.5 s

s₂ = 0.5(2.5)

s₂ = 1.25 m.

Note: Distance between the pelican and fish = s₁ + s₂

Distance between the pelican and fish = 29.41+1.25

Distance between the pelican and fish = 30.66

Distance between the pelican and fish ≈ 31 m

3 0

3 years ago

3. How much work is done when you pull a 6 N wagon for 5 meters?

8090 [49]

Answer:

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question

force = 6 N

distance = 5 m

We have

workdone = 6 × 5 = 30

We have the final answer as

Hope this helps you

3 0

2 years ago

A 14-foot boat operating under oars after dark must show what color light to prevent a collision?

Tomtit [17]

<span>A "White" colored light must be shown by a 14-foot boat that is operating under oars after it is dark, in order to prevent a collision.

Boats which are less than 23 feet cannot exceed a maximum speed of 7 knots. They need to exhibit an all-around white light when it is sailing in the dark.

The other practicable sidelights can also be used instead of the white lights, when they are sailing in international waters.
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4 years ago