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Natalka [10]
3 years ago
7

A baby carriage is rolling down a hill. Take into consideration, the carriage has 90J of kinetic energy and the mass of the carr

iage is 0.5m. If you can only run at a speed of 10m/s, will you catch the baby carriage? What is the velocity of the carriage?
Physics
1 answer:
Sphinxa [80]3 years ago
7 0

Answer:

YES. 6√10

Explanation:

apply E=1/2mv^2 and find the velocity of carriage which is 6√10 ms-1

as our velocity is higher than that of cart. we can catch the carriage

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4 years ago
How much work is done when a girl applies a force of 80 N to move an object 4 m, and then moves the object 1 m back?
eduard

Answer:

w = \underline{{ \boxed{400 \:  J }}}

Explanation:

work \: done =  \boxed{force \times distance} \\ w = 80 \times (4 + 1) = 80 \times 5 \\ w = \underline{{ \boxed{400 \:  J }}}

7 0
4 years ago
Two charges of magnitude 5nC and -2nC are placed at points (2cm,0,0) and
scZoUnD [109]

Answer:

20 cm

Explanation:

Te electric potential enery U = kq₁q₂/r  were q₁ = 5 nC = 5 × 10⁻⁹ C and q₂ = -2 nC = -2 × 10⁻⁹ C and r = √(x - 2)² + (0 - 0)² +(0 - 0)² = x - 2. U =  -0.5 µJ = -0.5 × 10⁻⁶ J, k = 9 × 10⁹ Nm²/C².

So r = kq₁q₂/U

x - 2 = kq₁q₂/U

x = 0.02 + kq₁q₂/U m

x = 0.02 + 9 × 10⁹ Nm²/C² × 5 × 10⁻⁹ C × -2 × 10⁻⁹ C/-0.5 × 10⁻⁶ J

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7 0
3 years ago
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Answer:

has increased

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Since Neo and Morpheus's masses have gained velocity not equal to zero, their momentum now has increased.

A gain in velocity increases the momentum of a body.

 Momentum is the quantity of motion a body possesses.

It is mathematically expressed as:

 Momentum  = mass  x  velocity

Momentum is directly proportional to mass and velocity

4 0
3 years ago
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