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sashaice [31]
3 years ago
15

EASY MULTIPLE CHOICE QUESTIONS! PLEASE HELP!

Physics
1 answer:
skad [1K]3 years ago
8 0
1.A and 2.B there the answers
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What is time and speed and acceleration
Andre45 [30]

Answer:

Acceleration is the rate of change of velocity with time.Acceleration occurs anytime an object's speed increases or decreases, or it changes direction. Much like velocity, there are two kinds of acceleration: average and instantaneous. Average acceleration is determined over a "long" time interval.

Explanation:

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7 0
3 years ago
What does Newton's third law describe?
Dennis_Churaev [7]
A. Equal and opposite forces

Explanation:
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Josh is designing a lab to separate a mixture of salt and water. He looks at all the ways to separate a mixture but decides that
dalvyx [7]

The best method to separates mixture of salt and water is evaporation. Take a small sample of mixture in a china dish. Heat it till all water evaporate. The residual remain is salt. Josh should use this method to separate salt from water.

8 0
3 years ago
Read 2 more answers
I need help please please thank you
Romashka [77]

Answer:

the first one is energy level

Explanation:

5 0
3 years ago
Suppose we have a 600 kilogram great "yellow" shark swimming to the right at a speed of 3 meters traveled each second as it trie
sammy [17]

Answer:

2.64 m/s

Explanation:

Given that a 600 kilogram great "yellow" shark swimming to the right at a speed of 3 meters traveled each second as it tries to get lunch. An unsuspecting 100 kilogram blue fin tuna is minding its own business swimming to the left at a speed of 0.5 meters traveled each second. GULP! After the great "yellow" shark "collides" with the blue fin tuna

Momentum = MV

Momentum of the yellow shark before collision = 600 × 3 = 1800 kgm/s

Momentum of the tun final before collision = 100 × 0.5 = 50 kgm/s

Total momentum before collision = 1800 + 50 = 1850 kgm/s

Let's assume that they move together after collision. Then,

1850 = ( 600 + 100 ) V

1850 = 700V

V = 1850 / 700

V = 2.64285 m/s

Therefore, the momentum of the shark after collision is 2.64 m/ s approximately

6 0
3 years ago
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