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A car moving in a straight line starts at  𝑥 = 0 x=0 at  𝑡 = 0 t=0. It passes:  Point  𝑥 = 29.0   m x=29.0m with speed  11.5   m/s 11.5m/s at  𝑡 = 3.00   s t=3.00s  Point  𝑥 = 375   m x=375m with speed  44.0   m/s 44.0m/s at  𝑡 = 20.0   s t=20.0s
Part A  Calculate the average speed of a complete round trip in which the outgoing 230 km is covered at 98 km/h, followed by a 1.0-h lunch break, and the return 230 km is covered at 60 km/h
A rolling ball moves from \( x_{1} = 8.5 \, \text{cm} \) to \( x_{2} = -4.7 \, \text{cm} \) during the time from \( t_{1} = 3.8 \, \text{s} \) to \( t_{2} = 6.7 \, \text{s} \).
The maximum mass m that a person can hold in a hand when the arm is positioned with a 105° angle at the elbow as shown in (Figure 1) is 29 kg. Assume the forearm and hand have a total mass of 2.0 kg with a CG that is 15 cm from the elbow, and that the biceps muscle attaches 5.0 cm from the elbow.
Assume that trunk of a person makes an angle 0 = 26° with the horizontal as shown in (Figure 1).  Part A  What will be the magnitude of Fy on the fifth lumbar vertebra?