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Zina [86]
3 years ago
12

A force of 15 N acts upon a 3 kg block. Calculate the acceleration of the object.

Physics
1 answer:
alexira [117]3 years ago
3 0
B
Force=Mass times acceleration
15=3x
x=5ms^2
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98 POINTS, 5 simple questions!! HELP
lozanna [386]

25,000 Feet = 7620m

PE = mgh where m is mass, g is gravity accel: 9.8 n h is height

= 90 x 9.8 x 7620

= 6720840J

= 6.72MJ

F = ma where m is mass, a is accel = gravity = 9.8

= 90 x 9.8

= 882N

Accel = gravity = 9.8m/s^2

KE = 1/2mv^2 where m is mass n v is vel

if no wind resistance, PE leaving airplane = KE at net

6720840 = 1/2 x 90 x v^2

v^2 = 149352

v = 386.5m/s


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If the Earth and distant stars were stationary (motionless) in space, what would we observe about the wavelength from these star
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