Concept explainers
The force exerted by the rocket engine on
Answer to Problem 1TP
Option (b),
Explanation of Solution
Given:
Distance traveled with rocket engine firing ( | Payload final velocity ( |
500 | 310 |
490 | 300 |
1020 | 450 |
505 | 312 |
Formula used:
The relation between the distance, speed and acceleration is,
The relation between force, mass and acceleration is,
Calculation:
Case 1:
Substituting the given values in equation (1), we get
Substituting the value in equation (2), we get.
Case 2:
Substituting the given values in equation (1), we get
Substituting the values in equation (2), we get.
Case 3:
Substituting the given values in equation (1), we get
Substituting the values in equation (2), we get.
Case 4:
Substituting the given values in equation (1), we get
Substituting the values in equation (2), we get.
The average force exerted on the payload is,
Conclusion:
Thus, the force exerted by the rocket engine is
Want to see more full solutions like this?
Chapter 7 Solutions
COLLEGE PHYSICS (OER)
- While exercising in a gym, you hold a 2,000-N weight at the height of 0.5 m above the floor. The net force on the weight is: Group of answer choices a. 2,000 N b. 4,000 N c. 0 N d. 1,000 Narrow_forwardWhat is the average force exerted by a 70 kg passenger on his seatbelt when his car crashes onto a concrete wall? The car moving at 17.90 m/s comes to halt in 0.10sarrow_forwardA 2000 kg car, taveling to the right at 30 m/s, collides with a brick wall and comes to a rest in 0.2 seconds. What's the average force the car exerts on the wall? 1. 12,000 N to the right 2. 60,000 N to the right 3. 300,000 N to the right 4. none of the abovearrow_forward
- A pitcher throws a softball toward home plate. When the ball hits the catcher's Mitt, its horizontal velocity is 32 meters/second. The softballs velocity goes to 0 meters/second in 0.8 seconds when caught. If the softball has a mass of 0.2 kilograms, what's the force of the impact? Use f= ma, where a =arrow_forwardA baseball catcher is performing a stunt for a television commercial. He will catch a baseball (mass 145 g) dropped from a height of 60.0 m above his glove. His glove stops the ball in 0.0100 s. What is the force exerted by his glove on the ball?arrow_forwardDr. Jekyll (m = 70kg) is riding a skateboard when he realizes the cranberry juice he’s drinking is sweetened with artificial sweetener and turns into Mr. Hyde (m = 155kg). If Dr. Jekyll was initially moving at 6.5m/s, what is Mr. Hyde’s speed? (assume no external forces act)arrow_forward
- A golf ball with a mass of 45g is struck with a golf club. It leaves the tee at a speed of 200km/hr in a time of 0.4s. What is the force executed on the ball by the club?arrow_forwardSkydiving tunnels have become popular attractions, appealing in part to those who would like a taste of the skydiving experience but are too overwhelmed by the fear of jumping out of a plane at several thousand feet. Skydiving tunnels are vertical wind tunnels through which air is blown at high speeds, allowing visitors to experience bodyflight. On Natalya's first adventure inside the tunnel, she changes her orientation and for an instant, her 46.8-kg body momentarily experiences an upward force of air resistance of 521 N. Determine Natalya's acceleration during this moment in time.arrow_forwardA hockey stick exerts an average force of39 N[S] on a 0.20 kg hockey puck over a displacement of 0.22 m. If the hockey puck started from rest, what is the final velocity of the puck? Assume that the friction between the puck and the ice is negligible.arrow_forward
- A soccer player kicks a stationary 0.425 kg ball giving it a speed of 13.7 m/s. The player’s foot is in contact with the ball for 0.097 second. What is the average force when the player kick the ball? a. 6 N b. 5.8 N c. 60 N d. 84 Narrow_forwardA 0.145-kg baseball pitched horizontally at 27.0 m/s strikes a bat. If the contacttime between bat and ball is 2.5 ms, calculate the net force (N) acting on the ball. A. 156.6 B. 15.66 C. 1566 D. 1.566 E. NOne of the abovearrow_forward28. Xyrus throws a 0.15-kg rubber ball down onto the floor. The ball's speed just before impact is 6.5 m/s, and just after is 3.5 m/s. If the ball is in contact with the floor for 0.025 s, what is the magnitude of the average force applied by the floor on the ball? 60 N 3.0 N 133 N 3.5 Narrow_forward
- University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University