Francesca, who likes physics experiments, dangles her watch from a thin piece of string while the jetliner she is in takes off from JFK Airport. She notices that the string makes an angle of 25° with respect to the vertical as the aircraft accelerates for takeoff, which takes about 18 s. Estimate the takeoff speed of the aircraft.
2 answers
78
2.0 Points
What follows is a calculated question with 1 blanks. A box is given a push so that it slides across the floor. Given that the coefficient of kinetic friction is 0.4 and the push imparts an initial speed of 2.6 m/s, the total distance travelled by the box is m.
What follows is a calculated question with 1 blanks. A box is given a push so that it slides across the floor. Given that the coefficient of kinetic friction is 0.4 and the push imparts an initial speed of 2.6 m/s, the total distance travelled by the box is m.
1 answer