Page |2 3. A marathoner runs due east for 61.5% of the time, stops and rests...
A bird watcher meanders through the woods, walking 0.45 km due east, 0.65 km due south, and 2.90 km in a direction 32.0° north of west. The time required for this trip is 2.00 h. (a) Determine the magnitude and direction (relative to due west) of the bird watcher's displacement. Use kilometers and hours for distance and time, respectively. magnitude _______________ km direction _______________ ° north of west (b) Determine the magnitude and direction (relative to due west) of the...
A bird watcher meanders through the woods, walking 0.40 km due east, 0.70 km due south, and 2.15 km in a direction 31.0° north of west. The time required for this trip is 3.00 h. (a) Determine the magnitude and direction (relative to due west) of the bird watcher's displacement. Use kilometers and hours for distance and time, respectively. Magnitude: ___km Direction:_____north of west (b) Determine the magnitude and direction (relative to due west) of the bird watcher's average velocity....
14. (5 pts) A motorist drive East for 30 minutes at 50 mi/hr, then stops 1/2 hour for lunch. She continues East 120 miles in 2 hours. (a) What is her total displacement? (b) What is her average speed? 15. (2 pts) Can a car have a Northward velocity and a Southward acceleration. Explain. 16. (5 pts) A carpenter tosses a hammer vertically to a friend working on a roof 25 ft above him. A) Draw a diagram showing relevant...
(0) A car runs 25.0 m straight towards East (positive direction) in 2.50 s. It then runs backwards towards West 5.00 min 1.0 s. Then the car runs forward again for another 40.0 m in 4.0.s. Calculate the car's average velocity for the entire motion. (10pts) (2) A high speed train starts from rest with an acceleration of 5m/s for 22s. What is the final velocity? (10pts) (3) A high speed train starts from rest with an acceleration of 5m/s²...
A hiker travels 2 km due east of his starting point. Then he travels 1 km northwest. Finally, he travels 3 km due north. How far is the hiker from his starting point after the 3 displacements and in what direction? Draw the three displacement vectors to scale and add them graphically Find the magnitude and direction of A, B and A + B for A = -4i – 7j and B = 3i – 2j . Describe the following...
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...
Jaya drives 340.0 m due east, which takes her 15 seconds. She turns and travels 540 m due north while traveling at a constant 27.1 m/s. Then she turns and travels 210 m due east, which takes her 11.0 s. a) Draw a diagram showing Jaya's path. Label the path length of each leg of the journey. Draw the total displacement vector on the diagram. b) What is the total elapsed time for Jaya's journey? c) What was the path...
Use the graph below for questions 12 15 Velocity versus Time 1 2 3 4 5 6 78 9 10 Time (s) 12, what is the average acceleration of the particle from t = 2 s to t-9 s? 13. What is the instantaneous acceleration at t 5s? G. If a projectile is launched with an initial velocity of 20 m/s from a height of 50 m in th Mehort ho ng dos it take the projectile to return to...
Solve exactly if possible. Express all decimals to 4 significant figures. 1) 2) 3) 4) 5) 6) 7) What are Newton's Laws of motion? What is a "frame of reference"? What is a coordinate system? Express the point x-3, y-4 using polar coordinates. What is the SI unit for force? How is it defined using SI base units? What are the four fundamental forces in the universe? What is the approximate gravitational acceleration, g, near the Earth's surface? If this...
Could you please answer these questions 1- ++++++++ 2- +++++++ 3- +++++++ 4- ++++++++++++++ 5- ++++++++++ 6- +++++++++ 7- +++++++ 8- ++++++++++++++ 9- Calculate the average density of the following astronomical body: Mars. Mars = kg/m3 Where does the value fit among those listed in the table below? Look up the density of a typical rock, such as granite in another source and compare the density of Mars to it. A proton, which is the nucleus of a hydrogen atom,...