How do dog whistles work?
1 answer:
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The mass of the cart is 0.167 kg
Explanation:
We can solve the problem by using Newton's second law, which states that the net force applied to an object is equal to the product between its mass and its acceleration:
where
F is the net force acting on an object
m is its mass
a is its acceleration
For the cart in this problem, we have
F = 0.5 N is the net force applied
is the acceleration
Substituting, we find the mass:
Learn more about Newton's second law:
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Answer:
a) t = 0.25 s, b) x = 0.075 m
Explanation:
a) For this exercise we will use kinematic relationships in one dimension
v = v₀ + a t
in the problem they indicate the initial velocity v₀ = 0.15 m / s, the final velocity v = 0.45 m / s and the acceleration of the squid a = 1.2 m / s²
t =
we calculate
t =
t = 0.25 s
b) We can also find the distance traveled during this acceleration
v² = v₀² + 2a x
x =
let's calculate
x =
x = 0.075 m