It is an example of balanced force.
hope this helps. good luck
To find the answer, take 55 and divide it by 1.85 to get the thickness of one card. In this case the answer would be 29.72973 cm. each.
Acceleration is a change in *speed* over time. In this case, the speed of the car increased by 90 km/hr in 6 s, giving it a rate of 90 km/hr/6s, or 15 km/hr/s. We’re asked for the acceleration in m/s^2, though, so we’ll need to do a few conversions to get our units straight.
There are 1000 m in 1 km, 60 min, or 60 * 60 = 3600 s in 1 hr, so we can change our rate to:
(15 x 1000)m/3600s/s, or (15 x 1000)m/3600 s^2
We can reduce this to:
(15 x 10)m/36 s^2 = 150 m/36 s^2
Which, dividing numerator and denominator by 36, gets us a final answer of roughly 4.17 m/s^2
Answer:
v = 7.65 m/s
t = 0.5882 s
Explanation:
We are told that the salmon started downstream, 3.18 m away from a waterfall.
Thus, range = 3.18 m
Since the horizontal velocity component is constant, then;
Range = vcosθ × t
Thus,
vcosθ × t = 3.18 - - - (eq 1)
We are told the salmon reached a height of 0.294 m
Thus, using distance equation;
s = v_y•t + ½gt²
g will be negative since motion is against gravity.
s = v_y•t - ½gt²
Thus;
0.294 = v_y•t - ½gt²
v_y = vsinθ
Thus;
0.294 = vtsinθ - ½gt² - - - (eq 2)
From eq(1), making v the subject, we have;
v = 3.18/tcosθ
Plugging into eq 2,we have;
0.294 = (3.18/tcosθ)tsinθ - ½gt²
0.295 = 3.18tanθ - ½gt²
We are given g = 9.81 m/s² and θ = 45°
0.295 = (3.18 × tan 45) - ½(9.81) × t²
0.295 = 3.18 - 4.905t²
3.18 - 0.295 = 4.905t²
4.905t² = 2.885
t = √2.885/4.905
t = 0.5882 s
Thus;
v = 3.18/(0.5882 × cos45)
v = 7.65 m/s
Answer:
delay or stifle the emergence of the perspective
