Cyclist's Trip 11 1 point A cyclist rides 12.0 km east for 30 minutes, What is...
A cyclist rides 3.0 km due west, then 17.0 km 15° west of north. From this point she rides 9.0 km due east. What is the final displacement from where the cyclist started (in km)? (Express your answer in vector form. Assume the +x-axis is to the east, and the +y-axis is to the north.)
A girl rides her bike 5.6 km due east. While riding she experiences a resistive force from the air that has a magnitude of 2.7 N and points due west. She then turns around and rides due West back to her starting point. The resistive force from the air on the return trip has a magnitude of 3 and ints due east. (a) Find the work done (in J) by the resistive force during the round trip. (b) Based on...
1. A train at a constant 62.0 km/h moves east for 32.0 min, then in a direction 46.0° east of due north for 29.0 min, and then west for 42.0 min. What are the (a) magnitude and (b) angle (relative to east) of its average velocity during this trip? 2. A cart is propelled over an XX plane with acceleration components ax 5.5 m/s2 and ay = -2.3 m/s. Its initial velocity has components vox = 9.3 m/s and voy...
14 1 point The Sun's mass is 2.0 x 100 kg. its radius is 7.0 x 10 km, and it has a rotational period of 30 days. If the Sun were to collapse into a white dwarf of radius 5080 km, what would the period of the white dwarf be? Give you answer in units of seconds and assume three sig figs. Further assume that no mass is lost in the process and that the Sun is a sphere with...