Question

A stone resting on the ground as a gravitational force of 20n acting on it,what is weight of the mass of the stone g=10ms

Answer 1

Answer:

mass of stone is 2 kg because the formula of F=mg

f=20 n

g=10m/s^2

so put the value of F and g in formula

20=m*10

20/10=m

2=m

Answer 2

u = 20 m/s
v = 0
S = 50 m
M= 1kg
${v}^{2} - {u}^{2} = 2as \\ ({0}^{2}) - ({20}^{2} ) \: = 2 \times a \: \times 50 \: \\ - 400 \div 100 = - 4 {ms}^{ - 2} \\ \: force \: of \: friction \: f \: = m \times a \\ = 1kg \: \times ( - 4 {ms}^{ - 2} \\ = - 4 \: n$
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