Two pebbles, Pebble A and Pebble B, are thrown horizontally with the same force. Pebble A's mass is 3 times the

Physics

1 answer:

Hitman42 [59]3 years ago

5 0

Answer:

Pebble A has 1/3 the acceleration as pebble B.

Explanation:

F = m×a

mass of a = 3 × mass of b (m_a = 3 × m_b)

Same starting force, F

m_a = mass of a

m_b = mass of b

a_a = acceleration of a

a_b = acceleration of b

F = m_a × a_a = m_b × a_b

3 × m_b × a_a = m_b × a_b

3 × a_a = a_b

a_a = a_b / 3

You might be interested in

You drop a 14-g ball from a height of 1.5 m and it only bounces back to a height of 0.85 m. what was the total impulse on the ba

Allisa [31]

<span>Remember that impulse = change in momentum

this means we compute the momentum of the ball just before impression and just after; we know the mass, so we find the speeds

the ball falls for 1.5m and will achieve a speed given by energy conservation:

1/2 mv^2 = mgh => v=sqrt[2gh]=5.42m/s

since it rises only to 0.85 m, we compute the initial speed after power from the same equation and get
v(after)=sqrt[2*9.81m/s/s*0.85m] = 4.0837 m...

now, recall that momentum is a vector, so that the momentum down has one sign and the momentum up has a positive sign, so we have

impulse = delta (mv) = m delta v = 0.014 kx (4.08m/s - (-5.42m/s) = 0.133 kgm/s </span>

4 0

3 years ago

Read 2 more answers

Plasma is a controllable reactive gas that is used to make small ____ in silica which are used in computers and cell phones.

tensa zangetsu [6.8K]

<span>Plasma is a controllable reactive gas that is used to make small PATTERNS in silica which are used in computers and cell phones.</span>

4 0

3 years ago

10 points

MariettaO [177]

Answer:

true