3 years ago

Henri Becquerel and the Curies found out that _____.

Physics

2 answers:

SIZIF [17.4K]3 years ago

5 0

Atoms were not indivisible and indestructible

Ainat [17]3 years ago

4 0

Atoms were not indivisible and indestructable

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7. 2 kg

8. 0.5 kg

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3 years ago

Stapp rode a rocket sled, accelerating from rest to a top speed of 282 m/s (1015 km/h) in 5.00 s, and was brought jarringly back

ser-zykov [4K]

Answer:

a) $a=5.74\ g\ m/s^2$

b) $a=20.55\ g\ m/s^2$

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Given that

Initial velocity u =0 m/s

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Rocket accelerated up to 5 s :

We know that

v= u + at

282= 0+ a x 5

$a=56.4\ m/s^2$

So the acceleration

$a=56.4\ m/s^2$

$a=5.74\ g\ m/s^2$

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Final velocity of rocket v=0 m/s

Initial velocity = 282 m/s

v= u + at

0= 282 - a x 1.4

$a=201.42\ m/s^2$

$a=20.55\ g\ m/s^2$

So the deceleration

$a=20.55\ g\ m/s^2$

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4 years ago