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3 years ago

Which statement about speed and/or velocity is true?

Physics

2 answers:

maw [93]3 years ago

8 0

Answer: The right Answer is Velocity has both speed and direction.

Explanation:

i took the test

Nutka1998 [239]3 years ago

6 0

Answer:

Explanation:

Took the test also

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What is measured by the amount of time a muscle group can sustain a contraction? A. Muscular endurance B. Muscular strength C. C

PtichkaEL [24]

Answer:

A. Muscular endurance

Explanation:

Muscular endurance is measured by the amount of time a muscle group can sustain a contraction.

5 0

3 years ago

Describe and name the different types of collision. In which are the linear momentum and kinetic energy conserved

ipn [44]

Answer:

1. Elastic collision

2. Inelastic collision

Explanation:

Elastic collision: collision is said to be elastic if total kinetic energy is not conserved and if there is a rebound after collision

the collision is described by the equation bellow

$m1U1+ m2U2= m1V1+m2V2$

Inelastic collision: this type of collision occurs when the total kinetic energy of a body is conserved or when the bodies sticks together and move with a common velocity

the collision is described by the equation bellow

$m1U1+ m2U2= V(m1+m2)$

8 0

4 years ago

Remove the ice cube tray and the plastic bag from the freezer and let them sit for 3 minutes. Then gently remove the piece of ic

Salsk061 [2.6K]

Answer:

That when you leave the ice setting without foil, it melts slower. When you put the piece of ice in the foil it melts faster than just letting it set without foil. I really hope this helps.

Explanation:

8 0

4 years ago

The nucleus of the polonium isotope 214 Po (mass 214 u) is radioactive and decays by emitting an alpha particle (a helium nucleu

amid [387]

Answer:

368224.29906 m/s

Explanation:

M = Mass of Polonium nucleus = 214 u

V = Velocity of nucleus

m = Mass of Helium nucleus = 4 u

v = Velocity of alpha particle = $1.97\times 10^7\ m/s$

In this system the momentum is conserved

$MV+mv=0\\\Rightarrow MV=-mv\\\Rightarrow 214V=-4\times 1.97\times 10^7\\\Rightarrow V=\dfrac{-4\times 1.97\times 10^7}{214}\\\Rightarrow V=368224.29906\ m/s$

The recoil speed of the nucleus that remains after the decay is 368224.29906 m/s

6 0

3 years ago

Read 2 more answers

Se lanza verticalmente hacia arriba una piedra con una velocidad de 125km/h.

Anon25 [30]

I think it’s C not sure tho

5 0

3 years ago