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Gekata [30.6K]
3 years ago
14

A car moved 40 km north and 90 km south. What is the displacement of the car?

Physics
1 answer:
il63 [147K]3 years ago
8 0

Answer:

A. 50 km south

Explanation:

hope this helps!

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An observer sitting at a bus stop sees the bus drive by at 30 m/s to the east. He also sees a
Dafna1 [17]

Answer:

32 m/s

Explanation:

The speed of a bus is 30 m/s due East wrt the passenger

He also sees a  passenger on the bus walking to the back at 2 m/s.

We need to find the passenger's velocity relative  to the bus. As the observer sees that the bus and the passenger are moving in opposite direction. Let v is the relative velocity. So,

v = 30 m/s + 2 m/s

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What is the purpose of humping
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Explanation:

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An alien from the newly discovers planet nine weighs himself on his planet and finds his weight to be 3200 N. When he stoves on
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Answer:

2.45 m/s²

Explanation:

From the question,

On the Earth

W = mg.................. Equation 1

Where W = weight of the alien on the earth, m = mass of the alien on the earth, g = acceleration due to gravity of the earth.

Make m the subject of equation 1

m = W/g................... Equation 2

Given: W = 3200 N

Constant: 9.8 m/s²

Substitute these value into equation 2

m = 3200/9.8

m = 326.5 kg.

Similarly,

On planet 9,

W' = mg'............... Equation 3

Where W' = weight of the alien on planet 9, g' = acceleration due to gravity on planet 9.

make g' the subject of the equation

g' = W'/m............ Equation 4

Given: W' = 800 N

Substitute into equation 4

g' = 800/326.5

g' = 2.45 m/s²

5 0
3 years ago
According to the Creative Curriculum model, the _____ sets the context for teaching and learning
vladimir2022 [97]

Answer:

A. structure of the classroom

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According to the Creative Curriculum model, the _ structure of the classroom_ sets the context for teaching and learning.  

In creative curriculum model children learn through creative and active learning strategy. Creative curriculum are implemented through structure of classrooms. Creative curriculum stands to enhance skill of the the students and inculcate in them passion for learning.

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The function of a circuit breaker is to stop a current that is
too great. The speed of the current is not involved.
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