If the wing stalls and the upward force decreases to 2.16 kN, what is the acceleration of the sailplane (enter first)? Is it upward or downward?

The vertical component of the acceleration of a sailplane is zero when the air pushes up against its wings with a force of 3.16 kN. Assuming that the only forces on the sailplane are that due to gravity and that due to the air pushing against its wings, what is the gravitational force on the Earth due to the sailplane (enter first)? Is that force upward or downward?

The accelerating force of the wind on a small 250-kg sailboat is 707 N northeast. If the drag of the keel is 500 N acting west, what is the acceleration of the boat?Select one:a.1.5 m/s2 due eastb.2.5 m/s2 due northc.2.0 m/s2 due northd.3.0 m/s2 northeast

A 12,000-kg airplane is in level flight at a speed of 870 km/h. What is the upward-directed liftforce exerted by the air on the airplane?

A model sailboat is slowly sailing west across a pond at 0.310 m/s. A gust of wind blowing at 28.3° south of west gives the sailboat a constant acceleration of magnitude 0.314 m/s2 during a time interval of 2.18 s. If the net force on the sailboat during the 2.18-s interval has magnitude 0.318 N, what is the sailboat's mass? What is the new velocity of the boat after the 2.18 s gust of wind? And what is the new direction of the boat after the 2.18 s gust of wind?

Jamieson is competing in his school’s 3.0-metre diving competition. For his last dive, he is performing a forward somersault. The duration of the dive must be exactly 1.75 seconds or he will under- or over-rotate before hitting the water. He jumps upwards off the board with a vertical velocity of 6.0 m s−1 and takes $t$t​ seconds to land in the pool. Take the upwards direction as positive.Which of the following correctly describes the acceleration during the jump?A4.9 m s−2B−4.9 m s−2C9.8 m s−2D−9.8 m s−2