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k0ka [10]
3 years ago
7

A 1542 kg car has a speed of 13.4 m/s when

Physics
1 answer:
My name is Ann [436]3 years ago
3 0

provide formulas to help you more

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If a rock is sitting on a table, the rock exerts a downward force on the table.
daser333 [38]
This is true. There is a downward force on the table that stabilizes the rock to stay there. 
7 0
4 years ago
Car B has the same mass as Car A but is going twice as fast. If the same constant force brings both cars to a stop, how far will
evablogger [386]

Answer:four times

Explanation:

Given

mass of both cars A and B are same suppose m

but velocity of car B is same as of car A

Suppose velocity of car A is u

Velocity of car B is 2 u

A constant force is applied on both the cars such that they come to rest by travelling certain distance

using  to find the distance traveled

where, v=final velocity

u=initial velocity

a=acceleration(offered by force)

s=displacement

final velocity is zero

For car A

0-(u)^2=2\times a\times s

s_a=\frac{u^2}{2a}------1

For car B

0-(2u)^2=2\times a\times s_b

s_b=\frac{4u^2}{2a}----2

divide 1 and 2 we get

\frac{s_a}{s_b}=\frac{1}{4}

thus s_b=4\cdot s_a

distance traveled by car B is four time of car A

7 0
3 years ago
Which of the following statements does not represent assumptions that stage theories share?
sasho [114]
C. A child can pass through the stages in any order.
5 0
3 years ago
The process of recording the strength of the contraction of a muscle when it is stimulated by an electrical current is known
Naddik [55]
i dont know the answer of your question correctly

3 0
4 years ago
What is the resistance of a toaster that uses 2A when connected to a 120V power source?
denis23 [38]

Answer:

60 ohms

Explanation:

From Ohm's Law:

V = IR

Where V = 120volts

I = 2A

R = ?

Note that R,V and I represents resistance, voltage and current respectively.

Substituting the above values into the formula.

V = IR

120v = 2×R

120= 2R

Making R the subject

R =120/2

R = 60 ohms

Hence the resistance of the toaster will be 60 ohms.

8 0
3 years ago
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