Question

76
84
(d) 17 cm
A bodybuilder uses a chest expander with five
springs. It takes a force of 20 N to pull one
spring out by 15 cm. How much force will be
needed to extend the expander by 15 cm?
(a) 50 N
(b) 75 N
(c) 150 N
(d) 1000 N
&
77 A small submarine of mass 1,000 kg sinks in
water with a uniform speed of 2m sl. The
resultant force exerted on the submarine as it
sinks is
(b) 500 N
(c) 2000 N
(d) 5000 N
(a) ON​

Answer 1

Answer:

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