3 years ago

What investigations are best for demonstrating cause and effect relationship

Physics

2 answers:

poizon [28]3 years ago

8 0

The cause would be how the idea started or developed and the effect would be how they both effected you together

ella [17]3 years ago

7 0

Answer:

Experimental investigations are best for demonstrating cause-and-effect relationships.

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Camouflage is to blend in with what

Elanso [62]

To blend in with your surroundings

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2 years ago

A 20-kg boy slides down a smooth, snow-covered hill on a plastic disk. The hill is at a 10° angle to the horizontal, and the slo

zvonat [6]

Answer:

13 m/s

Explanation:

I assume we are ignoring friction.

The boy's PE will all be converted to KE at the bottom of the hill.

to find PE = mgh we need to know h

h = 50 sin 10 = 8.68 meters

then: PE = 20 * 9.81 * 8.68 =<u> 1703.49</u> j

KE = 1/2 m v^2 = <u>1703 .49</u>

v = 13 m/s

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2 years ago

A cheetah runs with a positive acceleration. What does this tell you about the velocity time graph for the cheetah?

Katarina [22]

B is the correct answer

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3 years ago

A car of mass 800kg travels a distance of 40m at constant speed in a duration of 2.0s. The car exerts a forward force of 15kN.

Alex17521 [72]

W = F × s

W = 15kN × 40 m

W = 15.000 N × 40 m

W = 600.000 J

P = W/t

P = 600.000 J/2 s

P = 300.000 Watt

P = 300kWatt

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2 years ago

What is the direction of the normal contact force of the road on the wheels?

Gekata [30.6K]

Answer:

The direction of the contact forces acting on a body is not necessarily perpendicular to the contact surface. The resolution of contact forces in two components i.e. perpendicular to contact surface and along surface. Perpendicular component is normal force and parallel component is friction.

Explanation:

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2 years ago