1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MariettaO [177]
3 years ago
12

1.A car goes off a cliff horizontally at 49 m/s and falls for 5 seconds

Physics
1 answer:
nevsk [136]3 years ago
3 0
#1).  The horizontal speed doesn't change. 
The vertical speed is accelerated by gravity.

a).  Gravity increases the vertical speed by 9.8m/s every sec.
After 5 sec, the car is falling (5x9.8) = <em>49 m/s</em> vertically.

b).  Horizontal:  49m/s !  Wow !  Almost 110 mph. No wonder he went off the cliff.
After 5 seconds, it's still <em>49 m/s</em>.

c). After 5 sec, the horizontal speed and vertical-down speed are both 49 m/s.
The combination results in a velocity that points 45 degrees down from horizontal,
and its magnitude is

     square root of (49² + 49²) = 49 √2 = about <em>69.3 m/s</em> .


You might be interested in
Two test tubes are filled with a solution of bromthymol blue. A student exhales through a straw into each tube, and the bromthym
saw5 [17]

Answer:

oxygen was produced by phosynthesis

Explanation:

kkkkk

8 0
3 years ago
True or False—An external force is defined as a force generated outside the system of interest that acts on an object inside the
inn [45]

Answer:

An external force is a force that acts on an object within the system from outside the system. This type of force is different than an internal force, which acts between two objects that are both within the system. The net external force combines these two definitions; it is the total combined external force

Explanation:

ig the answer is true

5 0
3 years ago
How are energy time and power related physics?
olganol [36]
Power is the rate of energy. Mathematically, it is

Power (p) = Energy(E) / Time(t)

Hope this helps!
6 0
3 years ago
If you throw a raw egg against a wall, you'll break it, but if you throw it with the same speed into a sagging sheet it won't br
SashulF [63]
<span>The egg doesn't break when it hits the sheet because the impact time is longer. Momentum means the egg is slowed rather than coming to an abrubt halt. The softer the object that the egg hits, the longer the time it takes to break. A sheet is so soft that the force is never high enough for the egg to break.</span>
4 0
3 years ago
A substance with a define shape and volume is a
Vlad1618 [11]
Solid is the answer.
8 0
3 years ago
Other questions:
  • Photosynthesis uses solar energy and converts it to what type of energy
    6·1 answer
  • A car traveling at 20 m/s starts to decelerate steadily. It comes to a complete stop in 7 seconds. What is it’s acceleration?
    12·1 answer
  • Another name for a period is a family?
    14·1 answer
  • An aluminum rod of length 3.3 m and crosssectional area 3.8 cm2 is inserted vertically into a thermally insulated vessel contain
    5·1 answer
  • Two nuclei join to form a larger nucleus during which process
    6·2 answers
  • What is a crystalline solid?​
    7·1 answer
  • An electromagnetic wave has a frequency of 5.0 x 1014 Hz. What is the
    6·1 answer
  • ______is the amount of matter in an object. It does not change regardless
    15·1 answer
  • What magnification will be produced by a lens of power –4.00 D (such as might be used to correct myopia) if an object is held 43
    7·1 answer
  • System uses 49J of energy to do work in the change of internal energy is 58 j. how much heat was added to the system?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!