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erma4kov [3.2K]

3 years ago

7

A student found the rock shown above and weighed it to determine its mass. What steps should the student take to find its densit

y?

1 answer:

musickatia [10]3 years ago

7 0

find its density is the key so good luck buddy

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A 2 kg blue car is moving 6 m/s to the right and collides with a 3 kg red car that is moving 2 m/s to the left. The cars collide

snow_lady [41]

Answer:

Their velocity after the collision is 1.2 m/s, to the right.

Explanation:

Given;

mass of the blue car, m₁ = 2 kg

initial velocity of the blue car, u₁ = 6 m/s

mass of the red car, m₂ = 3 kg

initial velocity of the red car, u₂ = 2 m/s

let the blue car moving to the right be in positive direction

also, let the red car moving to the left be in negative direction

Apply the principle of conservation of linear momentum for inelastic collision.

m₁u₁ - m₂u₂ = v(m₁ + m₂)

where;

v is their velocity after the collision

(2 x 6) - (3 x 2) = v(2 + 3)

12 - 6 = 5v

6 = 5v

v = 6/5

v = 1.2 m/s, to the right

Therefore, their velocity after the collision is 1.2 m/s, to the right.

7 0

3 years ago

Please help soon!!!!

anyanavicka [17]

The Answer: Parallel

6 0

4 years ago

Read 2 more answers

The acceleration of a car is 0.33 m/s squared. if the applied force were cut in half, what would you predict the acceleration wo

NNADVOKAT [17]

0.17m/s²

Explanation:

According to newtons second law "the force on a body is depends on its mass and acceleration"

Force = mass x acceleration.

The more the mass and acceleration, the more the force a body possess.

Given that the acceleration of the body is 0.33m/s²

Force = 0.33 x mass

If the force on the body is halved, the acceleration will also be halved;

i.e:

Force = F

$\frac{F}{2}$ = 0.33 x mass

F = $\frac{1}{2}$ x 0.33 x mass

F = 0.17 x mass

Force = acceleration x mass

Acceleration is 0.17m/s²

learn more:

Acceleration brainly.com/question/3820012

#learnwithBrainly

3 0

3 years ago

& rock is at the top of a 20 meter tall hill. The rock has a mass of 10 kg. How much potential energy does it have?

Ronch [10]

Answer:

2000 J

Explanation:

10 × 10 × 20 = 2000

mass × gravitational field strength × height

Earth gravitational field strength is 10N/kg

4 0

3 years ago

Which statement is true about vectors?

Over [174]

Answer:

Vectors are defined as quantities which are fully described by both their magnitude and direction. By definition, a vector has a direction associated with it.

Explanation:

is this what you want?

3 0

3 years ago